2,224 research outputs found
Pengaruh Penambahan Sumber Nitrogen Terhadap Hasil Fermentasi Nata De Coco
Nata de coco adalah makanan yang berasal dari hasil fermentasi air kelapa dengan bantuan bakteri Acetobacter xylinum. Nata ini dapat digunakan sebagai dessert dan kaya akan serat. Pembentukan nata sangat membutuhkan nutrisi nitrogen. Hal ini perlunya mengetahui jenis sumber nitrogen dan komposisi yang tepat dalam fermentasinya. Penelitian ini bertujuan mengetahui pengaruh perbedaan sumber nirogen (urea, ZA, amonium sulfat,dan yeast ekstrak) serta mencari komposisi agar diperoleh nata dengan sifat fisik terbaik. Penelitian dilakukan dalam dua tahap yaitu mencari sumber nitrogen dan dilanjutkan mencari komposisi yang tepat. Hasil penelitian menunjukkan bahwa urea memberikan hasil terbaik dalam menghasilkan nata de coco dengan yield sebanyak 87,36 %, tebal 8,6 mm dengan komposisi sebanyak 5 gr dalam 500 ml air kelapa. Penelitian ini dharapkan mampu memberikan informasi sumber ntrogen dan komposisi yang tepat agar memperoleh hasil terbaik nata de coco
Atherogenic Index of Plasma in the Three Trimesters of Pregnancy
This study investigates the change that occurs for atherogenic index of plasma (AIP) which is a very good marker for the evaluation of the risk of atherogenicity and cardiometabolic health. This study indicates the logarithm of the triglyceride and high-density lipoprotein cholesterol (log [TG/HDL-c]). The parameters of triglycerides (TG) and high-density lipoprotein cholesterol (HDL-c) are estimated and compared with the control cases. The AIP is calculated for each case during pregnancy in first, second, and third trimesters separately and each is compared with control cases. The study population comprised (80) women aged between (20–40) years distributed to (20) healthy non-pregnant women, (20) in the first trimester, (20) in the second trimester, and (20) in the third trimester in Koya health centers. The results of this study showed a significant increase in the TG level in both the second and third trimesters of pregnancy compared to the control cases. Whereas, in the first trimester of pregnancy, it can be assumed that there is a non-significant decrease of TG level rather than control cases. As well as the serum levels of HDL for all three trimesters of pregnancy displayed non-significant changes when compared to non-pregnant cases. These data illustrate that the AIP levels during both the second and third trimesters of pregnancy are significantly higher, as compared to control cases, whereas the AIP levels in the first trimester are non-significantly elevated, as
compared with control case
Synthesis and Liquid Crystalline Studies of 2,4-bis(4'-n-nonyloxybenzoyloxy)benzylidene-4''-n-alkoxyaniline
In this paper, a series of new Schiff-bases: 2,4-bis(4’‑n‑nonyloxy -benzoyloxy)benzylidene-4’’-n-alkyloxyaniline (DC9An) were synthesized. The characterization of compounds was achieved through using (ultra violet, infrared, 1H-nuclear magnetic resonance) measurements. This series comprises 10 members differ by the length of n-alkoxy chain (i.e., OCnH2n+1, n=1-10). Their liquid crystalline properties were studied using differential scanning calorimetry and polarizing optical microscopy. The lower series such as n=1-3 are purely nematogenic liquid crystals, but the other means (n=4-7) have nematic and smectic phases (SmC and SmA). The higher members (n=8-10) are purely smectogenic liquid crystals
Application of the COM-B model to barriers and facilitators to chlamydia testing in general practice for young people and primary care practitioners: a systematic review
Background
Chlamydia is a major public health concern, with high economic and social costs. In 2016, there were over 200,000 chlamydia diagnoses made in England. The highest prevalence rates are found among young people. Although annual testing for sexually active young people is recommended, many do not receive testing. General practice is one ideal setting for testing, yet attempts to increase testing in this setting have been disappointing. The Capability, Opportunity, and Motivation Model of Behaviour (COM-B model) may help improve understanding of the underpinnings of chlamydia testing. The aim of this systematic review was to (1) identify barriers and facilitators to chlamydia testing for young people and primary care practitioners in general practice and (2) map facilitators and barriers onto the COM-B model.
Methods
Qualitative, quantitative, and mixed methods studies published after 2000 were included. Seven databases were searched to identify peer-reviewed publications which examined barriers and facilitators to chlamydia testing in general practice. The quality of included studies was assessed using the Critical Appraisal Skills Programme. Data (i.e., participant quotations, theme descriptions, and survey results) regarding study design and key findings were extracted. The data was first analysed using thematic analysis, following this, the resultant factors were mapped onto the COM-B model components. All findings are reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines.
Results
Four hundred eleven papers were identified; 39 met the inclusion criteria. Barriers and facilitators were identified at the patient (e.g., knowledge), provider (e.g., time constraints), and service level (e.g., practice nurses). Factors were categorised into the subcomponents of the model: physical capability (e.g., practice nurse involvement), psychological capability (e.g.: lack of knowledge), reflective motivation (e.g., beliefs regarding perceived risk), automatic motivation (e.g., embarrassment and shame), physical opportunity (e.g., time constraints), social opportunity (e.g., stigma).
Conclusions
This systematic review provides a synthesis of the literature which acknowledges factors across multiple levels and components. The COM-B model provided the framework for understanding the complexity of chlamydia testing behaviour. While we cannot at this juncture state which component represents the most salient influence on chlamydia testing, across all three levels, multiple barriers and facilitators were identified relating psychological capability and physical and social opportunity. Implementation should focus on (1) normalisation, (2) communication, (3) infection-specific information, and (4) mode of testing. In order to increase chlamydia testing in general practice, a multifaceted theory- and evidence-based approach is needed
The optical properties of Poly methyl methacrylate (PMMA) polymers doped by Potassium Iodide with different thickness
Films of pure Poly (methyl methacrylate) (PMMA) doped by potassium iodide (KI) salt with percentages (1%) at different thickness prepared by casting method at room temperature. In order to study the effect of increasing thickness on optical properties, transmission and absorption spectra have been record for five different thicknesses(80,140,210,250,320)µm. The study has been extended to include the changes in the band gap energies, refractive index, extinction coefficient and absorption coefficient with thickness
Measurement Natural Radioactivity in Soil Samples from Important historical locals in Alnajaf Alashraf city, Iraq.
Al-Najaf Al-Ashraf city one of the most important ,oldest, historical and religious cities in Iraqi country which includes hundreds of holy shrines and historical mosques which over the built hundreds of years. The natural radiation of forty two samples of soil which collected randomly in June 2013 from different religious and historical places were measured using 3"×3" Na(Tl) detection. The mean values activity concentrations of 238U, 232Th and 40K was ( 23.59±4.37, 12.10±0.54 and 60.68±2.30) Bq kg-1 respectively , specific activity for all soil sample were in the worldwide average. The average values of the Radium equivalent activity and annual effective dose were (22.455 Bq/kg and 25.375 μSv/y) less than the world average .The heist external and internal hazard and gamma activity concentration index were (0.274 , 0.412 and 0.705) lower than unity
The Association of Prothrombin Gene Mutations and Cytomegalovirus Infection with Abortion Among Iraqi Women
يُصنف الإجهاض على أنه إنهاء الحمل الناجم عن فشل أو إزالة الجنين من الرحم قبل إتمام الحمل. هناك عوامل مختلفة ترتبط بالإجهاض منها الكائنات الحية الدقيقة والعوامل الوراثية. ان الفيروس المضخم للخلايا هو أحد مسببات العدوى الفيروسية الخلقية التي تصيب مجموعة واسعة من الأشخاص. يعتبر جين البروثرومبين (معرف الجين: 14061 في NCBI) أحد الأسباب الأساسية التي تؤدي إلى تخثر الدم ووظيفة الإجهاض، وبالتالي فإن الهدف من الدراسة هو اكتشاف وربط الفيروس المضخم للخلايا وطفرة جين البروثرومبين بالإجهاض من خلال الأساليب الجينية والمناعية. تم جمع 5 مل من حجم الدم الكامل من خلال وخز الوريد وتم تقسيمها إلى أنبوبتين، أحداهما تحتوي على EDTA والأخرى دون (أنبوب عادي) من 74 امرأة لديهن تاريخ إجهاض كمجموعة مريضات و74 امرأة بدون سجل إجهاض مع واحد على الأقل من الخصوبة الناجحة كمجموعة تحكم. تُستخدم PCRs الخاصة بأليل لتضخيم مناطق الجينات باستخدام بادئات جينية تحتوي على تعدد أشكال جينات البروثرومبين.أظهرت النتائج الحالية أن أكبر خطر للإجهاض لوحظ في النساء المصابات بتفاعلية مصلية IgG في 65 امرأة مع تردد (87.8٪) وكان أقل معدل للإجهاض في إيجابية مصلية IgM في 3 نساء بمعدل تكرار (4.1٪) و6 (8.1٪).) كانت إيجابية لـ IgM-وIgG يشير إلى امتلاكهم عدوى قديمة وحديثة. علاوة على ذلك، تُستخدم PCRs الخاصة بالأليل لتضخيم تعدد الأشكال البروثرومبين G20201A. أظهرت نتيجة هذه الدراسة عدم وجود علاقة بين تكرار مستوى النمط الجيني للبروثرومبين والإجهاض في النساء المصابات بفيروس CMV. في حين أن هناك علاقة ارتباط ذات دلالة إحصائية بين مجموعات الأليلات A وG والإجهاض في النساء المصابات بفيروس CMV.Abortion is categorized as the termination of conception caused by the failure or removal of the embryo from the uterus before the conclusion of pregnancy. Microorganisms and genetic factors are two of the many factors associated with abortion. Cytomegalovirus is a widespread congenital virus infection pathogen that affects a wide variety of people. The prothrombin gene is one of the essential causes that trigger blood clotting and the function of abortion women, therefore the aim of the study is to detect and associate Cytomegalovirus and prothrombin gene mutation (Gene ID: 14061 in NCBI) with abortion through genetic and immunological methods. Five ml of whole blood was collected from an intravenous puncture and divided into two tubes, one with EDTA and one without (plain tube) from 74 women with an abortion history as a patient group and 74 women without an abortion record who had at least one successful fertility as a control group. Allele-specific PCRs are used to amplify gene regions with genetic primers containing prothrombin gene polymorphisms. Current results have shown the greatest risk of abortion was observed in women patients with IgG seropositivity in 65 women with frequency (87.8%) and the lowest rate of abortion was in IgM seropositivity in 3 women with frequency (4.1%) and 6 (8.1%) were positive for IgM-and IgG indicating they have both an old and recent infections. Furthermore, allele-specific PCRs are used to amplify prothrombin G20201A polymorphism. The result of this study demonstrated there is no association between prothrombin genotype level frequency and abortion in CMV-infected women. While, there is a highly significant association between A and G Alleles combinations and abortion in CMV-infected women
A supervised generative optimization approach for tabular data
Synthetic data generation has emerged as a crucial topic for financial
institutions, driven by multiple factors, such as privacy protection and data
augmentation. Many algorithms have been proposed for synthetic data generation
but reaching the consensus on which method we should use for the specific data
sets and use cases remains challenging. Moreover, the majority of existing
approaches are ``unsupervised'' in the sense that they do not take into account
the downstream task. To address these issues, this work presents a novel
synthetic data generation framework. The framework integrates a supervised
component tailored to the specific downstream task and employs a meta-learning
approach to learn the optimal mixture distribution of existing synthetic
distributions
Effect of Styrene Butadiene Rubber Latex on Mechanical Properties of Eco Concrete: Limestone Powder Concrete
To make concrete a truly green material, viable cement substitutes are available. This experimental investigation is performed to study the effect of using limestone powder (LSP) and styrene butadiene rubber (SBR) latex in the concrete mix. In this work, a concrete with 1:1.8:3 cementitious material:sand:gravel and water/cement ratio w/c of 0.5 is produced. First, LSP is used with 0, 5, 10, 15, and 20% replacements by weight of cements. The fineness of the LSP is measured using sieve No. 200 and showed about 30% pass. Second, and to improve the matrix of concrete due to the dilution effect, four ratios of SBR latex (0, 5, 10, and 15%) are added by weight of cements to the mix for each LSP ratio. Compressive strength at ages of 3, 7, 14, 28, and 90 days is tested for the concrete specimens mixed with LSP only to examine its effect on concrete strength’s development with time, whereas strengths are recorded at the age of 28 days for the other concretes. Three prisms were cast for each ratio and tested at 28 days. The results show general improvements in terms of compressive and flexural strengths
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