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Jun 2023 DOI 10.14302/issn.2578-2371.jslr-23-4446
Maru Temesgen MinwuyeletCorresponding author
A retrospective study quantifies chronic liver disease burden and trends in Eastern Amhara. It summarizes demographics, etiologies, and outcomes to inform regional planning.
Nov 2023 DOI 10.14302/issn.2640-690X.jfm-22-4298
Kore Sifir CheruCorresponding author
Introduction Family and virus programs are currently important for union and about 7 million, and unfortunately (250 million) reproduce. Above the place, it closes; it's slow, slow, causing serious injuries and women during pregnancy. In addition to friends and couples who want health and quality and quality and quality and quality. Especially in a hurry, access to FPS is valid and accessible limited, or you have the opportunity to go home safe and healthy and health plan programs. The final change is very associated with its own interests in the world. The focus agreement in women of fecund women takes advantage of the opportunity to defend themselves between women's threats. In addition, women are classified with different methods. Objectives To assess the Impact of Family Planning and Religious Belief upon Family Growth in Addis Ababa, Ethiopia. METHODS Research style was a descriptive cross-sectional survey, which assessed the employment of semi permanent strategies and effects of contraception among ladies of fruitful age, through health facilities in Addis Ababa, Ethiopia. Data are entered in to applied math software package Epinfo v 3.7 and export into SPSS to code decrypt and analysis. Outcome is gift as a variety of table, graph and bivariat and multi chance variable regression are presented. Result The magnitude of current utilization of modern contraceptive was 59 % among women in Addis Ababa public health facilities. Age (AOR =0.14(95%CI(0.03-0.68)), Educational status (AOR=0.04(95%CI (0.02- 0.63)), number of children wanted (AOR=10.8(95%CI (4.02- 18.97)) and communication with partner about modern contraceptive use (AOR=3.17(95%CI (0.89-11.27)) were statically significant factors for utilization of modern contraceptive.
Jun 2022 DOI 10.14302/issn.2328-0182.japst-22-4193
Tariku Belay YilkalCorresponding author
School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
The strategy for safe drug discovery and development has limited clinical success as compared to wasted time and resources annually. This is due to the fact that the results of multiphase preclinical trials are less likely to make an accurate early prediction on the safety of test compounds to progress into the clinic as a valuable therapeutic agent. A lot of time and resources has been wasted in the multistage processes of drug discovery and development that does not work at the end of the procedure every year. During pre-marketing stage, for instance, the number of unsuccessful clinical trials are greater than the successful one because of safety issues. A toxicity study at different stages of preclinical and clinical trials is a routine procedure to investigate the undesirable side effects of test compounds being manifested on the natural processes of living things. It deals with the effect and mechanism of toxicity of test compounds that triggers different biological responses on different organ systems. The biological responses that would be manifested as a result of interaction between the receptors and active molecules of a test compound could be desirable pharmacological effect or undesirable side effect or both responses are manifested simultaneously depending on the selectivity or specificity of the molecule of a test compound for its receptor subtype which makes safe drug discovery and development very challenging. The response efficiency of the body (the net outcome of the body’s biological reaction against the side effect) would determine the potency of a test compound to manifest undesirable pharmacologic effect. In other words, the amount of a drug required to cause a biological harm or injury depends on the magnitude of the body’s biological reaction in which the immune response plays a great pharmacological role by neutralizing and harmonizing xenobiotics with the biological molecules. The dose of a test compound at 100 mg/kg body weight, for instance, could be lethal to some of the study animals while it is still non-lethal to some other study animals depending on the response efficiency of the body. The immune system is well connected to each and every biological systems of the body which allows it to detect undesirable side effects being manifested through immunoglobulins signalling and activation mechanisms. This complex communication network helps to localize the diverse side effects of a test compound being manifested on different organ systems into the immune system which makes a toxicity study relatively simple to monitor. The cellular immune system becomes active following the molecule-receptor interaction and start producing antibodies which is also known as immunoglobulins to protect bodily harm and destruction. Under normal biological circumstances, the amount of immunoglobulins produced by the cellular immune system following exposure to a test compound is proportional to the number of harmful molecules interacted with its receptor subtype. Thus, with the reference to the changes in the immune response against the administered dose, it would be able to deal with the diverse undesirable side effects of a test compound being manifested on treated study animals using computational systemic biology.
May 2022 DOI 10.14302/issn.2769-2264.jw-22-4086
Gheibi MohammadCorresponding author
Department of Civil Engineering, Ferdowsi University of Mashhad, Iran
Rainfall is one of the most important components of the hydrological cycle. The importance of rainfall in arid and semi-arid regions is more apparent. Due to the important role of rainfall trend assessment in the proper management of water resources, in the present study, Khorasan Razavi province, the second-most populous province of Iran located in the northeast of the country, for this purpose was studied. Currently, this region is facing water shortage problems. In this study, the non-parametric Mann-Kendall method was used to evaluate the annual rainfall trend over a thirty-year period from 1989 to 2019. On the other hand, Sen's slope estimator method was used to determine the magnitude of the rainfall trend in the studied synoptic and rain gauge stations. The results showed that the root of water shortage problems is not due to drastic changes in rainfall. Therefore, water shortage problems in Khorasan Razavi province are mainly due to a lack of proper management (i.e., mismanagement). The present study, by examining the rainfall trend using an appropriate framework, tried to take an effective step towards improving the management of water resources in the northeast of Iran.
Oct 2021 DOI 10.14302/issn.2641-5526.jmid-21-3900
Perez Jean-claudeCorresponding author
Phd Maths Computer Science Bordeaux University, RETIRED Interdisciplinary Researcher (IBM Emeritus, IBM European Research Center On Artificial Intelligence Montpellier) Bordeaux Metropole, France.
In this theoretical discovery of a law of Life, there is MATHEMATICS (Geometry, Bits and Numbers) that UNIFY 3 universes as complementary as ATOMIC MASS, WAVES, and INFORMATION (DNA, RNA and Amino Acids). The discovery of a simple numerical formula for the projection of all the atomic mass of life-sustaining CONHSP bioatoms leads to the emergence of a set of Nested CODES unifying all the biological, genetic and genomic components by unifying them from bioatoms up to 'to whole genomes. In particular, we demonstrate the existence of a digital meta-code common to the three languages of biology that are RNA, DNA and amino acid sequences. Through this meta-code, genomic and proteomic images appear almost analogous and correlated. The analysis of the textures of these images then reveals a binary code as well as an undulatory code whose analysis on the human genome makes it possible to predict the alternating bands constituting the cariotypes of the chromosomes. The application of these codes to perspectives in astrobiology, cancer, and specifically in INFORMATION THEORY with the emergence of binary codes and regions of local stability (voting process), whose fractal nature we demonstrate, is illustrated. PREFACE by Professor Luc Montagnier Addendum by Robert Friedman M.D After the discovery of the DNA double helix structure allowing both the stable storage of genetic information and its transfer through messenger RNA to protein synthesis organelles themselves structured by RNA most abundant in cells, the ribosomal. This wonder of nature exists in ALL living beings from the virus to humans and is based on two codes, the linear sequence of nucleotides and that derived from codons where three nucleotides allow with a certain flexibility - synonymous codons - the choice in the twenty amino acids. But we are missing a third CODE the one governing at multicellular beings from the rotifer to human, the stabilized modulation of gene expression in a nutshell the differentiation of cells from the single cell of the fertilized egg. It is logical to think that this program which begins as soon as fertilization is written in the DNA. We are also prone to associate it with non-coding DNA sequences although they control gene expression. I introduce here the notion developed by Jean-Claude Pérez of mathematical harmony, a higher order present in all living beings and whose existence it finds in genomes, including those of viruses. Thus the natural evolution of variants of the genome of coronavirus Covid 19 tends towards increasingly long Fibonacci series. It remains to determine the Who, the How and the Why of such developments. I will bet with my mathematician colleague that waves and fractals play a role. Luc Montagnier ADDENDUM Jean-claude has given scientists a strong new direction for research. He has identified a unified field of science guided by the Golden Ratio and Fibonacci Sequence. By identifying an overall guiding principle that makes possible fractal-like nesting at all levels of biological manifestation, future researchers can begin with the "whole" instead of the "parts". If we know that complex systems are organized at varying levels by the Golden Ratio and Fibonacci Sequence, we can look for those universal patterns first and then fill in the gaps with small details to complete the picture. It's like having an overall view of a crossword puzzle before beginning to assemble the individual pieces. Without an overarching vision and guiding principle, completing the puzzle is infinitely more difficult. Once scientists and researchers realize and begin using this "SECRET IN HIDDEN IN PLAIN SIGHT," their discoveries will be orders of magnitude more fruitful. Robert Friedman M.D
Oct 2021 DOI 10.14302/issn.2641-7669.ject-21-3970
Dias Toledo Arruda-Neto JoaoCorresponding author
Linear Accelerator Laboratory, Physics Institute, University of Sao Paulo, São Paulo-SP, Brazil
Microcystins (MCs) are toxins profusely synthesized by cyanobacteria, causing livestock poisonings and endangering human health. We design and execute an experiment to investigate the attenuation (degradation) of microcystins by exposing them to gamma radiation and electron beams at doses of 0 (control), 3, 5, 10 and 15 kGy. The experimental conditions simulate microcystin contamination of aquatic environments; we thus consider (1) microcystins inside whole cells and extracellular dissolved in water, simulated by non-sonicated and sonicated cells, respectively, and (2) two acute microcystin concentrations within water. Toxicity tests of Microcystis aeruginosa detected immobilization (i.e., paralysis) of Ceriodaphniasilvestrii exposed to aqueous crude extracts of irradiated and non-irradiated M. aeruginosa (NPLJ-4 strain) at concentrations of 45 and 90 mg.L-1 (mg dry weight of freeze-dried material), and the results were analyzed using the Trimmed Spearman-Karber statistical program to obtain 48-h EC50, the average effective concentration causing immobility in 50% of organisms after 48 hours. We conclude that electron beams are effective physical agents for toxin attenuation (degradation) and reach 100% effectiveness at 5 kGy and above; their efficiency is two orders of magnitude greater than that of gamma radiation. This new body of information contributes to (1) remediating environmental water sources; (2) designing water/wastewater treatment facilities; (3) combatting chronic microcystin environmental contamination; and (4) inspiring further studies to promote the use of biomonitors (e.g., Cladocerans) to detect and evaluate microalgae contamination.
May 2021 DOI 10.14302/issn.2689-5773.jcdp-21-3799
Bajaj AnubhaCorresponding author
Consultant Histopathologist
Preface Frequently, benign bone tumours are an incidental discovery wherein clinical symptoms are contingent to tumour location and magnitude and manifest as localized pain, swelling, skeletal deformities or pathologic fracture. Radiographic imaging is a cogent methodology of discerning the neoplasms.
Nov 2020 DOI 10.14302/issn.2381-862X.jwrh-20-3501
Aboma DanielCorresponding author
Shenen Gibe General Hospital, Msc, IESO
Background A well-functioning drug supply management is the corner stone for any meaningful health service. However, Pharmaceutical supply systems in many developing countries have severe problems, including inefficient selection, procurement and use of drugs. The magnitude and extent of the problem is huge and chronic in the Ethiopian health care system for a long time. Objective To evaluate auditable pharmaceutical transaction service process in Seka primary hospital, Jimma zone south west Ethiopia. Evaluation Methodology Case study design involving both quantitative and qualitative methods was conducted in Seka primary hospital. The focus of this evaluation was on the process of Auditable pharmaceutical transaction service. The evaluation was focused on process part of the program with dimensions; availability, compliance and client satisfaction in the dimension of accommodation. Resource inventory, document review; key informant interviews and observations were conducted. Client satisfaction was assessed through exit interview; with sample size of 326. The qualitative data was analyzed manually using thematic analysis and quantitative data were analyzed by using SPSS version 23 software. Results In Seka primary hospital, percentage availability of the 32 selected Key medicinewas 10.7(82.0%) and there were no expired drugs found on their shelves. The availability of 17 of the required 20(85%) professionals was adequate according the Auditable pharmaceutical transaction service. The average lead time was found to be less than five days. The average counselling and dispensing time were 5:43 minutes and 1:17 minutes, respectively. The average number of drugs per prescription was 2.0. The 1154(97.9%) of drugs prescribed by generic name and 1175(99.7%) of prescribed drugs on Essential Drug List indicates prescribers ‘adherence to facility specific List. Conclusion This evaluation revealed that (based on the pre-set judgment criteria) the achievement of the Auditable pharmaceutical transaction service in Seka primary Hospital was GOOD 82.6 % (achieved 355.2 of 430 weight given), i.e. even though it is Good achievement ,there are areas that needs improvement. Areas for improvement identified were: Pre- and in-service training for all health workers involved in store room and dispensary to improve on the medium counselling time, poor record keeping and the extremely poor labelingof drugs which this all improve the overall client satisfaction.
Sep 2020 DOI 10.14302/issn.2381-862X.jwrh-20-3504
CHHABRA S.Corresponding author
Emeritus Professor, Officer on Speical Duty, Dr. SushilaNayar Hospital, Utavali, Melghat, Amravati, Chief Executive Officer, Akanksha Shishugruha, Kasturba Health Society, Sevagram
Background Induced abortions are globally sought, whether permitted, or not permitted. Community based information about abortion seeking by rural tribal women is scarce. Objectives Community based study was carried out to know the magnitude, profile, reasons, places, persons performing IA for rural tribal women. Material Methods Study was conducted in 118 villages to get the study subjects . Women from every fourth house were interviewed for desired information. Results and Conclusion Of all abortions, 2.17% in Melghat and 24.38 %in Sewagram were IA. Most women who had IA were young and 19% in Melghat region, 2.6% in Sewagram region were illiterate. Majority of Sewagram region, were housewives of low middle class, in Melghat unskilled workers of low economic class. In Melghat region all women reported seeking IA at health facilities,63% Private hospitals (PH), 18.5% Sub centres (SC), 7.4% Medical College (MC), 7.4% District hospital(DH), 3.7% Primary Health Centres (PHCs) and In Sewagram region 58% PH, 23% MC, 6.7% PHCs, 3.9% DH, 3.9% SCs and 3.9% at home. Most women said they had IA for spacing with no contraceptive use or contraceptive failure, poor health, poverty, IA were done medically in 76.2%, surgically 23%. No sex–selective IA were reported and there was no evidence Many women lacked awareness and had misconceptions, more so in Melghat region. In focus group discussions, common reasons for disfavoring IA were personal beliefs (34%), practice restrictions (19%). There was extreme poverty, still PH were used. Lot of awareness is required.
Sep 2020 DOI 10.14302/issn.2694-1201.jsn-20-3554
Getachew Kumara MitikuCorresponding author
Nekemte Referral Hospital, Oromia, Ethiopia.
Background Traumatic brain injury is an expanding major public health problem and the leading cause of death of the young and productive part of the world’s population. Research is mainly done in high-income countries where only a small proportion of the worldwide fatalities occur. Only few studies have examined prognostic factors of traumatic brain injury outcome in developing countries including Ethiopia. This study was aimed at defining the peculiar demographic and other associated factors of traumatic brain injury (TBI) outcome among patients treated for head injury at Nekemte Referral Hospital. Objective The main purpose of this study was to describe the magnitude of TBI outcome and assess factors associated with unfavourable outcome of TBI among patients treated for head injury at the surgical side in Nekemte Referral Hospital from July 8, 2016 to July 7, 2018. Methods A retrospective cross-sectional document review was conducted among TBI patients treated for head injury from July 8, 2016 to July 7, 2018 at Nekemte Referral Hospital. Data were collected using a pre-tested data collection format. Data analysis was done using SPSS version 20. Descriptive statistics were computed and association between the dependent and independent variables were assessed by using logistic regression. Odds ratios with 95% confidence interval were computed. Significant association was declared when the p value was <0.05. Results In this study, out of 378 cases 95 (25.1%) were discharged with unfavourable outcome of which 37(9.8%) were neurologic deficits and 58 were deaths giving overall mortality rate of 15.3%. Patient age>60years (AOR: 15.13; 95%CI: 3.575-64.028), time interval from injury to treatment (AOR: 16.054; 95%CI: 5.832-44.194), low GCS (AOR: 18.224; 95%CI: 4.167, 79.695), conservative management (AOR: 20.774; 95%CI: 6.106-70.681), pupils abnormality (AOR: 9.078; 95%CI: AOR: 2.996-27.509) were associated with unfavourable outcome. Conclusions A quarter of patients treated for TBI at Nekemte Referral Hospital are discharged with unfavourable outcomes. Old age, delayed presentation to the hospital, low GCS, conservative management, and pupillary abnormality increase the odds of unfavourable outcome. Timely management of TBI before patients develop secondary brain injury and use of surgical intervention based on CT scan diagnosis will reduce the occurrence of unfavourable outcome.
Jul 2020 DOI 10.14302/issn.2379-7835.ijn-20-3458
Bai YeonCorresponding author
Professor, Dept of Nutrition and Food Studies, Montclair State University, Montclair, New Jersey, 07043,
Daily intake of fruits and vegetables provides the basis for healthy nutrition. Yet low consumption of fruits and vegetables (FV) persists among school-aged children. Framed by the Social Cognitive Theory, this study aimed to determine the effectiveness of nutrition lessons combined with an active choice intervention on children’s FV consumption. Using a quasi-experimental design, 89 second graders were assigned to groups. Students in the experimental group (n=46) received four nutrition lessons combined with nine active choice sessions, while those in the control group (n=43) received active choice sessions only. Responses to pre- and post-intervention surveys that inquired FV knowledge and consumption were compared within and between groups using independent and paired t-tests. Empowered by improved knowledge, self-efficacy and the positive environment created through nutrition lessons and active choice, the experimental group showed improvement in consumption behavior compared to the control group at post-intervention: bringing FV to school and finish eating (69.7 vs. 51.2, p=.05 for fruits; 43.5 vs. 39.5, p=.41 for vegetables); like choosing FV (84.8 vs. 65.1, p=.01); like to eat more FV (80.4 vs. 62.8, p=.16); FV are healthy (100 vs. 95.3, p=.14). The magnitude of improvement is small yet consistent in every aspect of outcome measures. Combining nutrition education with the active choice component showed potential for a larger impact on behavior change among study participants. Parental support and community involvement could enhance the effectiveness of nutrition education in schools.
Feb 2020 DOI 10.14302/issn.2642-3146.jec-20-3179
A. A Berezin.Corresponding author
Independent researcher, Moscow, Russia
A model of a Quantum recurrence in the dynamics of an elementary physical vacuum cell within the framework of four coupled Shrodinger equations has been suggested. The model of an elementary vacuum cell shows that a Quantum recurrence which represents the dynamics of virtual transformations in the cell, qualitatively differs from that of Poincare and the Fermi-Pasta-Ulam. Whereas these recurrences develop in time or space, the Quantum recurrence develops in a sequence of Fourier images represented by non exponentially separating functions. The sequence experiences random energy additions but no exponential separation occurs. The Quantum recurrence can be defined as the most frequent array of Fourier images that appear in a certain quantum system during a period of its observation. Different scenarios of the Fourier images sequences interpreted as bosons (electron and positron) and fermions (photons) apearing in the solutions of the model demonstrate that during some periods of its observation they become indistinguishable. The quantum dynamics of every physical vacuum cell depends on the dynamics of many other vacuum cells interacting with it, thus the quasi periodicity (during the period of observation) of the Fourier images recurrence can have infinite periods of time and space and the amplitudes of the Fourier images can vary many orders in their magnitudes. Such recurrence times does not correspond even roughly to the Poincare recurrence time of an isolated macroscopic system. It reminds the behavior of spatially coupled standard mappings with different parameters. The amount of energy in the physical vacuum is infinite but extracting a part of it and converting, it into a time-space form requires a process of periodical transfer of the reversible microscopic system dynamics into that of a macroscopic system. This process can be realized through a resonant interaction between the classical and quantum recurrences developing in these two systems. However, a technical realization of this problem is problematic.
Mar 2019 DOI 10.14302/issn.2379-7835.ijn-19-2677
Grootveld MartinCorresponding author
Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom
Objectives: Sunflower oil (SFO) is regularly employed for cosmetic, emollient and food frying purposes, the latter representing its foremost use globally. Therefore, full investigations of the molecular composition and quality of SFO products are a major requirement. In this study high-field 1H NMR analysis was employed to explore the molecular composition and authenticities of East African virgin (EAV) SFO products, particularly their acylglycerol fatty acid contents, together with those of selected minor constituents. Results acquired were statistically compared to those obtained on commercially-available, EU-approved refined SFO products via NMR-linked multivariate chemometrics strategies. Methodology: High-field 1H NMR spectra of EAV and refined SFOs (n = 55 and 4 respectively) were acquired at an operating frequency of 400 MHz. Their triacylglycerol fatty acid, triacylglycerol hydrolysis product, and sterol and stanol contents were determined via intelligent frequency bucketing and electronic integration of selected resonances. Univariate analysis-of-variance, and multivariate ROC curve evaluations were conducted to determine the magnitude and statistical significance of analyte concentration differences between these two sample classifications. Further multivariate NMR-linked chemometrics analyses such as principal component, random forest and support vector machine classification analyses were also utilised for this purpose. Key Results: Multicomponent 1H NMR analysis demonstrated that EAV SFOs had significantly higher and lower contents of monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs), respectively, than those of refined SFOs. Furthermore, significantly higher concentrations of ‘health-friendly’, cholesterol-blocking sterols and stanols were also found in these virgin SFO products. Major Conclusions: 1H NMR analysis provides much valuable molecular information regarding the composition and virginal status of SFOs.The high [MUFA]:[PUFA] content ratio of unrefined EAV SFO products renders them more suitable and safer for commercial or domestic deep-frying episodes than refined SFOs (MUFAs are much more resistant to thermally-induced peroxidation than PUFAs). These products also potentially offer valuable health benefits in view of their high natural sterol and stanol contents.
Dec 2018 DOI 10.14302/issn.2641-4538.jphi-18-2470
Takele Melku AbulieCorresponding author
Madda Walabu University Goba Referral Hospital School of Health Science Department of Nursing, Assistant Professor (PhD).
Background: Acute diarrheal diseases are the leading cause of preventable childhood death, especially in developing countries. It is the second leading cause of death in under-five year children nest to pneumonia. Objectives: The aim of this study was to determine the magnitude and associated factors of diarrhea in under-five in Harena Buluk district. Methods: A community based Cross sectional study was conducted in February, 2018. A two stage stratified sampling method was done to select the eligible households. Data was collected by trained data collectors using pretested questionnaire list which was prepared based on EDHS and WHO core questionnaires related to diarrhea. Data was entered in to a computer using Epi data 3.1 and exported to SPSS V.20 for further analysis. Logistic regression was used to determine level of association with 95% CI. A p-value <0.05 in the final model were considered as significant. Result: The two weeks period magnitude of diarrhea among under-five children was 28.4% with 95% CI (14.5-20.8) which was associated with households with one under five children (AOR: 0.268, 95% CI(.08,0.90)), living in the home with single room ((AOR = 6.01, 95% CI(1.01,36.01)), clean latrine/faces not seen around the pit or on the floor of latrine(AOR: 0.298, 95% CI(0.097,0.92)), long time take to fetch water from source (AOR: 0.046,95%CI(0.01,0.22)), home based water treatment ((AOR = 0.15, 95% CI: (0.04, 0.62)), living with animal in the same house(AOR: 8.31, 95% CI(2.46,28.06)), children who took gruel type of food(AOR: 0.24, 95% CI(0.07,0.81)), hand washing practice before cooking food (AOR: 0.195(0.066, 0.574)). Conclusion: The two weeks period magnitude of acute under-five diarrhea was relatively high and number of under five children in the household, cleanness latrine, time taking from the source of water, home based water treatment, number of rooms in the home, live with animal in the same house, type of food child take, hand washing before food preparation had significant association with the occurrence of under-five diarrhea. Improve community about home and environmental sanitation and hand practices were recommended.
Jun 2018
Kendall KevinCorresponding author
University of Birmingham, B15 2TT, UK
Graphene-Ceramic Composites (GCCs) have been little studied compared to graphene-polymer composites 1. Recent reviews 23 indicate that both mechanical and electrical property ceramic improvements can be obtained by mixing small quantities, typically 1 to 15% of graphene material with a ceramic precursor, then compacting and sintering. The greatest effect is on the electrical properties. The electrical conductivity of a material was first shown to rise by several orders of magnitude for only a 1% volume addition of graphene as in polymer composites 4 but the stiffness, strength and toughness only increased by 20-160% or so at 5% addition, a rather minor improvement compared to significant increases caused by slight ceramic process changes. Some crack bridging and pull-out mechanism was observed by electron microscopy in graphene-alumina composites, though the effects were modest. Surface friction and wear improvements of around 100% were also notable. This paper seeks to show that much higher toughness increases might be produced using the method pioneered by Clegg et al 5, where the graphite interlayers are replaced with graphene to produce improved ordered interfaces with reliable coverage and consistent interface fracture energy, enabling an increase in the fracture resistance of the ceramic by two orders of magnitude.
Nov 2014 DOI 10.14302/issn.2574-450X.jom-14-564
S. Aljabri KhalidCorresponding author
Department of Endocrinology, King Fahad Armed Forces Hospital. Jeddah, Kingdom of Saudi Arabia
Objective: Obesity is a major public health problem worldwide. We designed this study to determine the prevalence of obesity among Saudis in the department of primary care at King Fahad Armed Forces Hospital. Methods: Cross section study of Saudis of both sexes, aged more than or equal to 12 years at the department of primary care at King Fahad Armed Forces Hospital between January 2008 and June 2009. Results: A total of 5968 were attending the department of primary care were included in this study. There were 2269 (38.0%) male and 3699 (62.0%) female. With age, a gradual increase was seen in the Body mass index (BMI) in both males and females, up to the age of 59 years, with a decrease occurring thereafter. In the females below 20 years of age, the BMI was lower than in the male group. Above 30 years, the BMI in females was higher than in the males of corresponding ages. The prevalence of BMI≥25 was 70.0%.The prevalence of BMI≥25 was non significantly higher in the male compared to the female,71% and 69.3% respectively, p=0.2.The prevalence of overweight ( BMI=25-29.9) was higher in the males compared to the females, while the reverse was true for obesity(≥30),where 62.0% of the total female population was obese compared to 49.7% of the total male population. The magnitude of the difference in prevalence of obesity in the males and females was significantly high ( p<0.0001). Conclusion: The prevalence of obesity is high among Saudi population at the primary care setting and represents a major clinical and might represent a public health problem. A national prevention program at community level should be implemented.
Jun 2014 DOI 10.14302/issn.2324-7339.jcrhap-13-239
Lehmann CorinneCorresponding author
University of Cincinnati, College of Medicine, Department of Pediatrics
As advances in treatment and prevention are starting to decrease the magnitude of the Acquired Immunodeficiency Syndrome (AIDS) epidemic in Sub-Saharan Africa, the number of orphans and children surviving Human Immunodeficiency Virus (HIV) infection is growing. To date, little research has been conducted in the care of HIV-infected children in orphanages in Sub-Saharan Africa. In this qualitative study, managing personnel in 10 programs caring for HIV-infected children were interviewed to ascertain perceived barriers to care of these children. While all programs commented on medical infrastructure barriers, respondents felt sociocultural issues were more pressing. After analysis of transcribed interviews, three major themes of poverty, denial/stigma, and cultural differences with outsiders emerged. These findings have implications for international programs that both serve and seek to serve the needs of HIV-infected children and orphans in Africa. Outside funding organizations will need to address local poverty, stigma, and African “ownership” of HIV-positive orphans to ultimately ensure the best care of these vulnerable children.