bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling Er/Yb fiber lasers at high powers
Authors: Dong Liang , Matniyaz Turghun , Kalichevsky-Dong Monica T. , Nilsson Johan , Jeong Yoonchan
Published: May 2020

Conventional models of Er/Yb co-doped fibers assume all ytterbium ions are equally involved in the energy transfer with erbium ions, governed by a singular transfer rate. This would predict output power clamping once ytterbium parasitic lasing starts, contrary to the observations that the output continued to grow albeit at a slower rate. One study explained this using elevated temperature at high powers. Our study, however, shows that elevated temperature and mode-dependent effects only play insignificant roles. A new model is developed based on the existence of isolated ytterbium ions, which can explain all the observed experimental behaviors.
Longitudinal position dependence of the second-harmonic generation of optically trapped silica microspheres
Authors: Sanchez Lucile , Bruyère Aurélie , Bonhomme Oriane , Benichou Emmanuel , Brevet Pierre-François
Published: May 2020

We report the design of a setup combining the simultaneous and independent optical trapping and second-harmonic generation (SHG) of 1 µm diameter silica microspheres with two independent laser beams. Optical trapping is achieved with a tightly focused continuous wave infrared laser beam whereas the SHG intensity from the trapped microparticles is obtained with a 810 nm femtosecond pulsed laser. The silica microparticles are dispersed in an aqueous solution, and a microfluidic channel flow is used to remove untrapped microparticles. We show by the perpendicular displacement of the optical trap from the microfluidic channel wall that it is possible to control the contribution of the channel wall/solution interface to the overall SHG intensity. Stable trapping and SHG detection of two microparticles is also demonstrated. Combining the independent trapping of centrosymmetrical silica microparticles with SHG offers new avenues for analytical studies like surface sensing or all-optical devices where the SHG intensity is controlled by the trapping beam.
Foucault, a genealogia, a história da educação
Authors: Resende Haroldo de , Aquino Julio Groppa
Published: May 2020

Nietzsche, a genealogia, a história é um dos textos mais célebres de Michel Foucault. Por meio de uma espécie de homenagem e, ao mesmo tempo, uma apropriação teórico-prática, o pensador francês tributa a Nietzsche seu empreendimento de uma história genealógica, no qual passam a ocupar lugar – a par do que nomeia sentido histórico ou história efetiva – a inconstância e a provisoriedade dos acontecimentos, em oposição tanto à restituição essencial das coisas, quanto ao reencontro de uma identidade perpétua ou, ainda, ao reconhecimento da unidade universal do sujeito antropológico. A proposição deste dossiê Foucault, a genealogia, a história da educação busca, em alusão direta ao texto de Foucault, congregar abordagens e reflexões em íntima articulação à análise histórico-genealógica proposta por Foucault, de maneira a focalizar criticamente os jogos veridictivos envolvidos na investigação educacional contemporânea.
Geotourism Concept Development in the Basis of Environment Sustainability, Socioculture, and Natural Science Wealth. A Case Study in Indonesia
Authors: MARLINA Endy , HERAWAN Tutut
Published: May 2020

This paper presents geotourism development as a development framework of Gunungkidul Regency, Indonesia. This concept has been formulated in the consideration of policy direction of local and national tourism development, requirement of Geopark Global Network concept, consideration of environment, social and cultural environment and the demand of trend of the tourism interest improvement among society. This research was conducted with the urgency of: (1) the importance of geodiversity and geoheritage preservation as the unrenewable resources; (2) the important values of geodiversity and geoheritage that have a valuable knowledge for the people and their environment; (3) the importance of biodiversity as the environment wealth that plays an absolute role towards the balance of the environment; (4) The significant role of the wealth of socio-culture of people (cultural diversities) as a local wisdom that has a great power in the development process and (5) the urgency of the improvement of independency of tourism entrepreneurship as the accurate strategy in the development program for people prosperity. The direction of the geotourism development has been formulated through the synthesis of various analyses covering the analysis on government policy, analysis on the potential of tourism attraction, and SWOT analysis. The dialogue of any analyses is required to guarantee the production of formulation in the accurate and synergic direction of geotourism with any various existing development directions. The direction of the empowerment of the living environment and natural resources shows the awareness of how very fundamental the balance, harmony and aptitude of ecology, society, economic and culture is.
Expert’s Perceptions towards Management of Tourist Traffic in Protected Areas Based on the Tatra Mountains
Authors: DELEKTA Anna , FIDELUS-ORZECHOWSKA Joanna , CHROBAK Anna
Published: May 2020

Increasing human impact in mountain areas may constitute a challenge to national park authorities. Therefore, interdisciplinary research is important in order to address the various aspects of the functioning of protected areas.

The purpose of the present study was to analyze perceptions of infrastructure and tourist traffic in the Tatra Mountains by tourist experts.

Data were collected using the diagnostic survey method and in-depth interviews with experts. Statistical analysis included the use of the U-Mann-Whitney Test and the nonparametric Chi Square Test.

Research has shown differences in the way both local transportation and restaurant services are viewed in the Polish and Slovakian parts of Tatras. Experts indicate that the main reason for increasing tourist traffic is that the Tatras are in fashion, while the key problem is excess litter generation.
Responsible Tourism Consumption in Thailand: eWOM’s Role
Authors: ERAWAN Theera , KRAIRIT Donyaprueth
Published: May 2020

This paper examines the effects of electronic word-of-mouth (eWOM) on responsible tourism consumption behavior, based on the theory of planned behavior (TPB) and empirical investigation. A three-pronged approach (a cross validation technique involving a literature review, expert interviews, and an exploratory field study) was employed to obtain reliable and valid results. Structural equation modeling (SEM) was utilized to confirm the conceptual framework and hypotheses. Findings revealed a positive relationship between perceived behavioral control (PBC) and intention. Intention’s mediating role in responsible tourism consumption was also supported. eWOM’s positive, indirect effect on responsible tourism consumption emerged apart from the literature. The outcomes provide useful information for governments, the private sector, and civil society in planning and implementing sustainable consumption activities to achieve overall development for sustainable tourism. By proposing a conceptual framework based on TPB and utilizing the three-pronged approach, eWOM’s effects emerged as a valid extension of TPB. This study is among the first to be conducted in developing country and in the context of tourism in Thailand, where the primary focus is Sustainable Development Goal (SDG) #12: responsible consumption and production.
Twin-to-twin transfusion syndrome as a cause of neonatal acute liver failure
Authors: Prueksapraopong Chattip , Piriyakitpaiboon Varisa , Lumbiganon Dissajee
Published: May 2020

Background

Acute liver failure (ALF) is a rare condition during neonatal period.

Objective

To report a case of recipient twin with fulminant ALF secondary to hydrops fetalis caused by twin-to-twin transfusion syndrome (TTTS).

Method

The patient was admitted to the neonatal intensive care unit (NICU) for respiratory failure requiring mechanical ventilation and fulminant ALF with prolonged international normalized ratio (INR) and elevated liver enzymes with highest aspartate aminotransferase of 4,580 U/L.

Results

Laboratory investigation for secondary causes of liver failure was not revealing. Her liver enzymes and coagulation levels were dramatically normalized as the clinical symptoms of hypervolemia improved within 1 week.

Conclusion

TTTS can be a possible cause of neonatal ALF. Early detection with proper management of TTTS is important to avoid adverse outcomes. However, pathogenesis of hepatic dysfunction in TTTS is rarely described, and further studies are needed to help understanding the correlation between liver diseases and TTTS.
Effect of Solid Additives on the Rheological Property of Nitroglycerin Plasticized Nitrocellulose
Authors: Qi Le , Ma Zhongliang , Liang Jiahao , Xiao Zhongliang
Published: May 2020

The rheological properties of energetic materials comprising nitroglycerin plasticized nitrocellulose were studied using rheological tests in a parallel plate rheometer. The Carreau-Yasuda equation was applied to calculate the zero-shear viscosity, and the dependence of solid additives, temperature and solvent content on zero-shear viscosity was developed. One can study flow characteristics of the energetic materials by observing the zero-shear viscosity instead of the effect of solid additives, temperature and solvent content. Additionally, the relationship between zero-shear viscosity and additives concentration was studied. The Kissinger-Akahira-Sunose (KAS) method was used to obtain the viscous flow activation energy, and the equation to describe the relationship between solid additives concentration and viscous flow activation energy was represented. The Zero-Shear Viscosity (ZSV) test showed that temperature was the predominant effect on the ZSV value at low solvent content, as the concentration of solid additives increased, the ZSV value decreased at low solvent content but increased at high one, however, there is an opposite trend when graphene concentration is above 0.1%. The viscous flow activation energy showed different changing trends with solid concentration that increased at different solvent content. The master curves were obtained by Time-Temperature Equivalence Principle, the viscosity prediction model has been established and showed a good agreement with the experimental data, compared with the test results, the viscosity prediction model is more accurate at low temperature (15°C-25°C). The obtained knowledge of the different equations will form a contribution to the research on extrusion process of this energetic material containing Cyclotrimethylenetrinitramine (RDX) and graphene, and the results obtained by this research have certain practical significance of the extrusion process for this energetic material.
A New fatty acid and some triterpenoids from propolis of Nkambe (North-West Region, Cameroon) and evaluation of the antiradical scavenging activity of their extracts
Authors: Mahamat Abakar Ali , Nyemb Jean Noël , Gade Isaac Silvère , Ngenge Alfred Tamfu , Talla Emmanuel , Céline Henoumont , Sophie Laurent , Mbafor Joseph Tanyi
Published: May 2020

The aim of this work was to evaluatein vitroantiradical scavenging activity of propolis from Nkambe (North-West, Cameroon). The polyphenol content of the acetone extract was evaluated using the Folin-Ciocalteu reagent as 0.166±0.008 gGAE/100 gRM. Antiradical scavenging activity of hexane and acetone extracts was carried out on DPPH using ascorbic acid as standard. The results showed that the extracts possess antiradical activity with IC50of 141 μg/mL and 267 μg/mL for acetone and hexane extracts, respectively. The column chromatography separation on silica gel of the hexane fractionyielded compounds1to3. The structures of these compounds were elucidated by NMR and mass spectrometry data as Lupenone (1), a mixture ofαandß-Amyrin (2) and lastly Hexatriacontanoic acid (3) which was described for the first time from propolis.
Source apportionment of soil contamination based on multivariate receptor and robust geostatistics in a typical rural–urban area, Wuhan city, middle China
Authors: Ou ChangHong , Zhu Xi , Hu Lin , Wu Xiaoxu , Yu Weixian , Wu YiQian
Published: May 2020

In this study topsoil samples were collected from 57 sites of Dongxihu District which is a typical Chinese urban–rural combination area, to analyze the causes and effects of 6 heavy elements. (Ni, Pb, As, Cu, Cd, and Hg) Pollution of Enrichment factor, multivariate statistics, geostatistics were adopted to study the spatial pollution pattern and to identify the priority pollutants and regions of concern and sources of studied metals. Most importantly, the study area was creatively divided into central urban, semi-urbanized, and rural areas in accordance with the characteristics of urban development and land use. The results show that the pollution degree of potential ecological risk assessment is Hg>Ni>Cu>As>Cd>Pb, and semi-urban regions> city center> rural areas. Results based on the proposed integrated source identification method indicated that As was probably sourced from agricultural sources (33.99%), Pb was associated with atmospheric deposition (50.11%), Cu was related to industrial source 1 (45.97%), Cd was mainly derived from industrial source 2 (42.97%) and Hg come mainly from industrial source 3 (56.22%). The pollution in semi-urban areas in urbanization need more attention.
Accuracy of boundary layer treatments at different Reynolds scales
Authors: Badano Nicolás D. , Menéndez Angel N.
Published: May 2020

Resistive forces associated to boundary layers (‘friction’) are usually out of scale in physical models of hydraulic structures, especially in the case of hydraulically smooth walls, generating distortions in the model results known as scale effects, that can be problematic in some relevant engineering problems. These scale effects can be quantified and corrected using suitable numerical models. In this paper the accuracy of using numerical simulation through the Reynolds Averaged Navier-Stokes (RANS) approximation in order to represent the head losses introduced by friction in hydraulically smooth walls is evaluated for a wide range of Reynolds scales. This is performed by comparing the numerical results for fully developed flow on circular pipes and between parallel plates against experimental results, using the most popular wall treatments. The associated numerical errors, mesh requirements and ranges of application are established for each treatment. It is shown that, when properly applied, RANS models are able to simulate the head losses produced by smooth wall friction accurately enough as to quantify the scale effects present in physical models. A methodology for upscaling physical model results to prototype scale, free of scale effects, is proposed.
NF2 inhibits proliferation and cancer stemness in breast cancer
Authors: Wang Zhibao , Zhou Zhiqiang , Wang Zhe , Cui Yijie
Published: May 2020

Background

Previous studies have shown that NF2 plays a key role in tumorigenesis. NF2 has been illustrated to be downregulated in several types of human cancer. However, the role of NF2 in breast cancer remains unclear.

Methods

We used UALCAN and KM-plotter database to study NF2 expression in human breast cancer and corresponding normal tissues and analyzed its relationship with clinicopathological parameters. We investigated the role of NF2 in breast cancer cells behavior by inhibiting its expression in MDA-MB-231 and MCF-7 cells.

Results

In this study, we found that NF2 was downregulated in breast cancer tissues compared to the adjacent normal tissues. We found that the low expression of NF2 was related with the tumor stage. NF2 overexpression inhibited the cell colon formation and stemness.

Conclusion

Our results indicate a role of NF2 in the progression of breast cancer.
Recent development and applications of nanomaterials for cancer
immunotherapy
Authors: Huang Yao , Zeng Jinhua
Published: May 2020

Immunotherapy, which utilizes the patient’s own immune system to fight against
cancer, further results in durable antitumor responses and reduces metastasis and
recurrence, has become one of the most effective and important cancer therapies along
with surgery, radiotherapy, and chemotherapy. Nanomaterials with the advantages of
large specific surface, delivery function, and controllable surface chemistry are
used to deliver antigens or adjuvants, or both, help to boost immune responses with
the imaging function or just act as adjuvants themselves and modulate tumor
microenvironment (TME). In this review, recent development and applications of
nanomaterials for cancer immunotherapy including delivery systems based on
nanomaterials, uniting imaging, self-adjuvants, targeting functions, artificial
antigen presenting cells, and TME modulation are focused and discussed.
Feasibility study of welding dissimilar Advanced and Ultra High Strength Steels
Authors: Bayock Francois Njock , Kah Paul , Salminen Antti , Belinga Mvola , Yang Xiaochen
Published: May 2020

This study concerns the weldability of dissimilar Ultra high-strength steel (UHSS) and advanced high-strength steel (AHSS), which is used in the modern machine industry. The materials offered superior strength as well as relatively low weight, which reduces microstructure contamination during a live cycle. The choice of the welding process base of the base material (BM) and welding parameters is essential to improve the weld joint quality. S700MC/S960QC was welded using a gas metal arc welding (GMAW) process and overmatched filler wire, which was performed using three heat input (7, 10, and 15 kJ/cm). The weld samples were characterized by a Vickers-hardness test, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The test reveals a decrease of softening areas in the HAZ and the formation of the stable formation of Bainite-Ferrite for S700MC and Bainite-martensite for S960QC when the heat input of 10 kJ/cm is used. It is recommended to use the GMAW process and Laser welding (Laser beam-MIG), with an optimal welding parameter, which will be achieved a high quality of manufacturing products.
Graphene-Reinforced Bulk Metal Matrix Composites: Synthesis, Microstructure, and Properties
Authors: Ahmad Sara I. , Hamoudi Hicham , Abdala Ahmed , Ghouri Zafar K. , Youssef Khaled M.
Published: May 2020

This paper provides a critical review on the current status of graphene-reinforced metal matrix composites (GRMMCs) in an effort to guide future work on this topic. Metal matrix composites are preferred over other types of composites for their ability to meet engineering and structural demands. Graphene is considered an ideal reinforcement material for composites due to its unique structure and extraordinary physical, thermal, and electrical properties. Incorporating graphene as a reinforcement in metals is a way of harnessing its extraordinary properties, resulting in an enhanced metallic behavior for a wide variety of applications. Combining graphene with bulk metal matrices is a recent endeavor that has proven to have merit. A systematic study is needed to critically examine the efforts applied in this field, the successes achieved, and the challenges faced. This review highlights the three main pillars of GRMMCs: synthesis, structure, and properties. First, it discusses the synthesis techniques utilized for the fabrication of GRMMCs. Then, it highlights the resulting microstructures of the composites, including graphene dispersion and interfacial interactions. Finally, it summarizes the enhancements in the mechanical, electrical, thermal, and tribological properties of GRMMCs, while highlighting the effects of graphene type and content on those enhancements.
9Be nuclear magnetic resonance spectroscopy trends in discrete complexes: an update
Authors: Buchanan Jenna K. , Plieger Paul G.
Published: May 2020

9Be solution NMR spectroscopy is a useful tool for the characterisation of beryllium complexes. An updated comprehensive table of the 9Be NMR chemical shifts of beryllium complexes in solution is presented. The recent additions span a greater range of chemical shifts than those previously reported, and more overlap is observed between the chemical shift regions of four-coordinate complexes and those with lower coordination numbers. Four-coordinate beryllium species have smaller ω
1/2 values than the two- and three-coordinate species due to their higher order symmetry. In contrast to previous studies, no clear relationship is observed between chemical shift and the size and number of chelate rings.
The Lead Exposure Risk Due to Wells Water Consumption in Code Riverside Community, Yogyakarta City
Authors: Musfirah Musfirah , Rangkuti Ahmad Faizal
Published: May 2020

The environmental conditions of Code River were strongly influenced by anthropogenic activities that include industry, hospitals, domestic, and agriculture. The contamination status on the Code River according to BLH Yogyakarta reported in 2014 was heavily polluted based on STORET (≤-31). The riverside community were misusing the river for final disposal site, potentially contaminating it with lead (Pb). Local communities were potentially exposed to Pb toxicity through well water consumption. An Environmental Health Risk Assessment (EHRA) study of ingestion exposure of heavy metals was never conducted in the Code Riverside, making it  interesting for further studies. The study aimed to determine human health risks of consumption of well water containing Pb in Code Riverside, Yogyakarta City using an observational design with an Environmental Health Risk Assessment approach. There were 9 environmental samples and 47 respondents selected based on certain criteria. Data was collected through environmental inspection and human health assessment, interviews and anthropometric data measurement of respondents. Data was analyzed by univariate (frequency distribution) and EHRA methods. The result showed that the noncarcinogenic risk level of Pb due to well water consumption from majority of research sites have RQ value (Risk Quotient) > 1, which means high potential risk to human health.
The Effects of Lighting Intensity on the Productivity of Textile Workers in Surakarta
Authors: Widjanarti Maria Paskanita , Setyawan Haris , Qadrijati Isna
Published: May 2020

The textile industries’ growth in 2018 have contributed to national economic growth (Kemenperin, 2018). Enhancing competitiveness through conductive business climate is a strategic step to increase productivity (Kemenperin, 2017).  Surakarta is one of the major cities in Indonesia famous for its textile products. Based on Indonesian Statistic Center, in 2016, the national textile industry productivity declined to 7.65%, directly affecting the productivity of textile industries in Surakarta, including PT IT. The weaving department of PT IT experienced the highest decline in work productivity with physical factor exposure more than Threshold Limit Value (TLV), including lighting intensity. This research aimed to analyze the correlation between the light intensity and worker productivity in 2018. This was a quantitative observational analytic research with cross sectional design in PT IT. From 50 workers in the weaving department, 32 were selected as samples through random sampling method. Light intensity was measured using Lux Meter ANA 999 in 32 measurement points. Work productivity was calculated using Productivity formula= Output (O)/ Input (I). Spearman correlation and SPSS program were used for data analysis. The result showed that there was a significant correlation between light intensity and worker’s productivity (p=0.000, r=0.629).
SMS Gateway as a Media to Improve Awareness and Dietary Compliance of Hypertensive Patients
Authors: Merita Merita , Iswanto Iswanto , Kasyani Kasyani , Fitriana Ratti , Wahyu Zimatul
Published: May 2020

Hypertension is a major health problem in Indonesia. Prevention can be applied through health promotion and modification of a healthy lifestyle. The aim of this study was to analyze the effects of SMS (Short Message Service) Gateway to dietary compliance and awareness of hypertensive patients. The research design was pre-experimental with one group pretest-posttest design. The study was conducted at Putri Ayu Health Center, Jambi City. The sampling technique was accidental sampling with a total sample of 30 hypertensive patients. The intervention was conducted for 30 days by sending SMS twice a day. The results of the study showed an average awareness score of 7.3 pre-test and 10.1 post-test. The average dietary compliance score was 21.2 pre-test and 31.3 post-test. Wilcoxon test showed there was an effect of SMS Gateway to awareness and dietary compliance in hypertensive patients (p-value = 0.000). This study concludes that there is an effect of nutritional messages through SMS media to awareness and dietary compliance in hypertensive patients.
Environmental Sanitation and Hygiene on Waste Collector in TPA Piyungan Bantul Yogyakarta
Authors: Munandar Jasas , Mulasari Surahma Asti
Published: May 2020

A garbagemen involved directly with garbage, it causes a garbagemen have injuried oftenly when they do their duty. Based on center of worker trans department Jakarta, the injury case causes has 81.169. A garbagemen risk, highly to influence. This is a descriptive kualitative research, the subject are garbagemen who lived in TPA Piyungan and people who involved to manage TPA Piyungan, Bantul Yogyakarta. Research use observed method and In-Depth Interview method. Data analyzed as kualitative descriptive. Data collected by triangulasi source technique.The result that sanitation and hygienic environtment and how to keep the environtment clean, and to maintain the risk environment work on the garbageman area is deficient. The suitability between sanitation and hygiene environment on the garbagemen still need to improve. Financing is the problem of the garbagemen, hygiene environment on garbagemen work area’s very deficient, that things happened too for willingness and act to create a healthy environment.
The Effect of Active Assistive Range of Motion to Blood Pressure Decrease of Type II Diabetes Mellitus Patient
Authors: Handayani Sri , Nurtanti Susana
Published: May 2020

The application of physical exercise that meets Frequency, Intensities, Time, Type can be applied to control the increase in blood sugar levels and reduce blood pressure. This research is a quantitative study with a pre-experiment design using a one group pretest-posttest model. The purpose of this research is to determine the effectiveness of providing Active Assistive Range of Motion actions in the form of isotonic movements where contractions of the muscles shorten with the movements of each joint in accordance with the range of motion which is normal but the tension in the muscles remains constant during the contraction to decrease blood pressure in people with type II diabetes mellitus. This research was carried out in 2019. The population of this study were people with type II diabetes mellitus who participated in chronic disease management program activities at the Baturetno Health Center as many as 52 people. The research sample of 25 people was taken by purposive sampling technique. The results showed a decrease in systolic and diastolic blood pressure in the range of 0-15 mmHg with an average decrease of 8.6 mmHg for systolic blood pressure and 6.64 mmHg for diastolic blood pressure. Statistical test with Wilcoxon obtained Asymp value. Sig. (2-tailed) of 0,000 with a confidence level of 95% so that it can be concluded that there is a significant difference between the blood pressure of patients with type II DM before and after the Active Assistive Range of Motion treatment at Baturetno Health Center.
Traditional Softball Games Effective Modified for Improving Nutritional Status and Physical Fitness in Elementary School Children
Authors: Anwar M. Choiroel , Budiono Irwan , Pamot Hermawan
Published: May 2020

Traditional children’s games at school have the potential to decrease the prevalence of obesity which tends to increase. Modifications and standardization of the game are needed so that the game can be implemented. The research objective is to develop a modified softball game model and test its effectiveness for improving nutritional status and physical fitness level of elementary school students. The development research design was used to produce the modified softball game model. Field trials of 27 elementary school fifth grade students were carried out with a one group before and after intervention design. The effectiveness of the model was assessed by changes in Z score of body mass index and physical fitness level before and after the intervention. The results of this research prove that the modified softball game model is valid and relevant to the physical education review. Application of the modified softball game model also proved effective in improving the nutritional status and physical fitness level of elementary school students. In the context of overcoming the problem of over nutrition in school-age children, it is recommended that schools and related stake holders implement the modified softball game model consistently.
Determination of Oviposition, pH, and Salinity of Aedes aegypti's Breeding Places in Semarang Regency
Authors: Cahyati Widya Hary , Siyam Nur
Published: May 2020

Dengue Hemorrhagic Fever (DHF) is still a health problem in Indonesia. This is because DHF can cause decease, and the incidence is always increasing. Vector control efforts in Semarang Regency can be done by knowing mosquito bionomics, so one of the actions can be taken is to modify the environment, so that the Ae. aegypti mosquito feels uncomfortable about our environment. This type of research is pure experimental. In this research, mosquito larva will be the subject to be breeded using water with various degrees of acidity (pH) and salinity, then the ability to reproduce in various water with the pH and salinity levels is observed. The sample used was F1 larva originating from breeding places using ovitrap in Semarang Regency. Based on the results of the study showed that the most preferred container of the Ae. Aegypti mosquito for oviposition is a container made of plastic and can. The most optimal water pH for instar 2 larva breeding is water with a pH of 9, followed by water with a pH of 8 and 7. The most optimal water salinity for instar 2 larva breeding is water with a 0-6gr / l salinity.
Antioxidant Potential of Madura Knife Scallop (Solen sp) Extract as a Prevention of Oxidative Stress
Authors: Anggarani Mirwa Adiprahara , Irawan Roy Januardi
Published: May 2020

Reactive Oxygen Species (ROS) are produced by humans as a result of cellular metabolism and environmental factors such as pollutants or cigarette smoke. ROS is a very reactive molecule and has the ability to damage cell structure. Oxidative stress is a condition between oxidants and antioxidants that is not balance, pathophysiologically, oxidative stress can trigger the risk of various diseases including hypertension, atherosclerosis, diabetes, heart failure, stroke and other chronic diseases. Oxidative stress can be overcome by intake of antioxidants. The purpose of this study was to determine the antioxidant activity contained in the meat and shells of a knife scallop (Solen sp.) that lives in Bangkalan waters, Madura. The method used in this study is an analysis of antioxidant activity with the DPPH method. Knife scallop has antioxidant activity which is evident from the IC50 values obtained. IC50 values of the shell and meat extract with ethanol solvent were 489.56 ppm and 748.49 ppm. IC50 values of the shell and meat extract with ethyl acetate solvent were 916.43 ppm and 2045.93 ppm. While the IC50 value of the shell and meat extract with chloroform solvent was 119.37 ppm and 1692.80 ppm. Based on IC50 data of knife scallop shell and meat extracts on the 3 types of solvents, it can be concluded that knife scallop’s shell and meat extract with ethanol solvent has the greatest antioxidant activity compared to ethyl acetate and chloroform solvents.
Urban Air Pollution and Testosterone Plasma Level of Traffic Policemen in Jakarta
Authors: Ramdhan Doni Hikmat , Modjo Robiana , Rachmawati Sutrani , Kurniasari Fitri
Published: May 2020

This study aims to investigate the concentration of traffic air pollution and the level of testosterone, fasting glucose, cortisol, and lipid profile among traffic police in Jakarta. Testosterone plasma and blood biochemicals in traffic police and the police officer were analyzed using ELISA kit. Air quality data from the Regional Environmental Agency (BPLHD) Jakarta 2012 were used for the characterization of exposure. The analysis used a t-test and linear regression test to show the relationship levels of pollutants exposure with the effects of reproductive dysfunction (p<0.05). The average plasma levels of testosterone in the traffic police 543.6 ± 170.5 mg/dL, which is higher than the police at the office 456.2 ± 133.2 mg/dL. The average plasma cholesterol levels of police at the office is 212.3 ± 42.0 mg/dL, which is higher than the traffic police 200.0 ± 40.2 mg/dL. On average fasting glucose levels police at the office is 90.0 ± 13.1 mg/dL, while traffic police 84.2 ± 5.9 mg/dL. The testosterone levels of traffic police are higher than the official police, and traffic police exposed to pollutants have lower fasting glucose levels than police officers in offices. Keywords: PM, plasma testosterone, reproductive function.
Consumption Pattern by Improving Blood Glucose Levels of Family Planning Acceptors of Injection Depo-Medroxy Progesterone Acetate
Authors: Ariesthi Kadek Dwi , Pattypeilohy Aning
Published: May 2020

The most popular injection contraception in Kupang city is injection contraception. The use of injectable birth control, especially depo-medroxy progesterone acetate (DMPA) more than 4 times, will potentially increase weight. This weight gain, if not balanced with a healthy diet, will potentially increase blood glucose levels. The purpose of this study is to determine the relationship of consumption patterns with an increase in blood glucose levels in DMPA injection acceptor family planning in Kupang city. This study uses a cross-sectional design. 200 respondents selected using a purposive sampling technique with inclusion criteria have used DMPA injection family planning for more than 1 year and gained weight. Data collection uses a questionnaire and measurement of glucose levels uses auto-check. Data are analyzed bivariate and multivariate. The results of blood glucose level measurements showed that 32 (16%) of respondents have glucose levels above normal. The results of the analysis showed that the habit of consuming fatty foods significantly affected the increase in blood sugar of DMPA injection acceptor family planning.
Fatigue in Shift Work on Stamping Division Workers of PT. Toyota Motor Manufacturing Indonesia
Authors: Ihsan Taufiq , Salami Indah Rachmatiah Siti
Published: May 2020

Various health problems are known from shift works. PT. Toyota Motor Manufacturing Indonesia (TMMIN) as a car manufacturing in Indonesia is a large industry that applies a shift work system for the workers. This study aims to see the relationship between shift work system in the Stamping Division of PT. TMMIN. The measurement works by using the reaction time method on the worker the shift (shift I/morning and shift II/night) and non-shift during the workday flash. Based on the average measurement of reaction time for the shift workers I was 284.79 milliseconds and shift worker II was 307.76 milliseconds. The risk of reaction time increase was 3.222 times due to shift works compared to non-shift workers. Based on the value of reaction time, shift workers in PT. TMMIN recommends a repair per shift after work on the eighth day for shift I and twelfth day for shift II.
Health-Related Quality of Life among the Elderly Living in the Community and Nursing Home
Authors: Nugraha Susiana , Aprillia Yuna Trisuci
Published: May 2020

The increasing number of the elderly population presents special challenges in the health sector with the emergence of degenerative problems and non-communicable diseases (NCD’s) that may decrease the quality of life (QoL). Development in the quality of life of the elderly is an important issue for national security and development. This study using cross-sectional approach, intended to identify the differences in the quality of life among the elderly who live in the nursing homes and the community.  The results showed that statistically significant differences were found in variable ages (p<001), education background (p<0.001), dependency level (p=0.024) for Activity Daily Living and (p<0.001) for Instrumental Activity Daily Living) and the overall score of QoL (p=0.036).  Based on this finding, the differences approach must be given in meeting the mobility needs and daily activities of the elderly who live in communities and nursing homes.
Serum Homocysteine Level and Ankle-Brachial Index in Peripheral Arterial Disease
Authors: Indrayana Yanna , Harahap Herpan Syafii
Published: May 2020

Patients with peripheral arterial disease have a higher risk of death compared to normal populations. There are several relatively new risk factors significantly increase the vulnerability to suffering from peripheral arterial disease, one of which is homocysteine. Studies investigating the role of serum homocysteine level as a biomarker of the severity of peripheral arterial disease based on an ankle-brachial index (ABI) in the different populations were still limited and it was never been studied in Mataram. This was a cross-sectional study aimed to investigate the correlation between serum homocysteine level and ABI in 77 peripheral artery disease (PAD) outpatients in Siti Hajar Hospital, Mataram. The diagnosis of PAD was based on ABI<0.9. Fasting serum homocysteine level was examined using the ELISA technique. Characteristic data collected were gender, age, hypertension, diabetes mellitus, and body mass index (BMI) category. There was a significant correlation between the increase of serum homocysteine levels and the decrease of ABI. The main risk factors for peripheral arterial disease in the subjects are hypertension, diabetes mellitus, and overweight/obesity. Serum homocysteine level is a predictor of peripheral arterial disease severity measured using ABI.
Effect of Yoga Physical Activity on Increasing Self-Control and Quality of Life
Authors: Rahayu Nur Indri , Amalia Triska Pangestu , Damayanti Imas
Published: May 2020

The purpose of this study was to determine the effect of physical activity of yoga on improving self-control and quality of life. The method used is experimental with The One-Group Pretest-Posttest Design research design. The sample of this research is the active female students of UPI Sport Science with a total sample of 28 people. The sampling technique uses purposive sampling. The instrument used was an adaptation of the Self-Control Scale questionnaire to test the increase in self-control and WHOQOL-100 to test the increase in quality of life. Data analysis used was Paired Sample t-Test to test the effect of yoga physical activity on increasing self-control and quality of life. The results of data analysis showed that there was an influence of physical activity of yoga on the increase in self-control (Z = -3,343, p = 0.001) and quality of life (t = -3.663, p = 0.001). So, it can be concluded that there is an influence of physical activity of yoga on increasing self-control and quality of life.
Developing Reproductive Health Communication in Early Marriage
Authors: Najib Najib , Nisa Alfiana Ainun , Nugroho Efa , Widowati Evi , Yang Chia En
Published: May 2020

Adolescent fertility is an important health and social problem because it is related to the level of morbidity and mortality of mothers and children. The results of the 2017 IDHS show that 7% of women aged 15-19 are already mothers, 5% have given birth, and 2% are pregnant with their first child. The data shows that adolescents are already sexually active, but still have an understanding of low reproductive health. The purpose of this study was to determine the effectiveness of community-based health communication models that developed to improve access to information and public knowledge related to contraceptive methods in young married couples in Rembang Regency in 2019. This research  used Research and Development design with a quasi-experimental data collection method. The population in this study were adolescents who married at a young age in Rembang District, while the sample was adolescents who married young in Sedan and Kragan villages (intervention group), Menoro and Ngasinan (control group). Quantitative data analysis uses univariate, bivariate, and multivariate, while for qualitative data use grounded theory. The effectiveness test showed significant data for knowledge (p = 0,000), attitudes (p = 0.003), access to information (0.012), preferences (p = 0.001), and access to contraception (p = 0,000). It can be concluded that the community-based health communication model can improve knowledge, attitudes, access to information, preferences, and access related to contraception in early married couples
Igf2 deletion alters mouse placenta endocrine capacity in a sexually dimorphic manner
Authors: Aykroyd Bethany R L , Tunster Simon J , Sferruzzi-Perri Amanda N
Published: May 2020

The placenta regulates materno-fetal nutrient transfer and secretes hormones that enable maternal physiological support of the pregnancy. In mice, these functions are performed by the labyrinth (Lz) and junctional (Jz) zones, respectively. Insulin-like growth factor 2 (Igf2) is an imprinted gene expressed by the conceptus that is important for promoting fetal growth and placenta formation. However, the specific role of Igf2 in the Jz in regulating placental endocrine function and fetal development is unknown. This study used a novel model to investigate the effect of conditional loss of Igf2 in the Jz (Jz-Igf2UE) on placental endocrine cell formation and the expression of hormones and IGF signaling components in placentas from female and male fetuses. Jz-Igf2UE altered gross placental structure and expression of key endocrine and signaling genes in a sexually dimorphic manner. The volumes of spongiotrophoblast and glycogen trophoblast in the Jz were decreased in placentas from female but not male fetuses. Expression of insulin receptor was increased and expression of the MAPK pathway genes (Mek1, P38α) decreased in the placental Jz of female but not male fetuses. In contrast, expression of the type-1 and -2 IGF receptors and the MAPK pathway genes (H-ras, N-ras, K-ras) was decreased in the placental Jz from male but not female fetuses. Expression of the steroidogenic gene, Cyp17a1, was increased and placental lactogen-2 was decreased in the placenta of both sexes. In summary, we report that Jz-Igf2UE alters the cellular composition, IGF signaling components and hormone expression of the placental Jz in a manner largely dependent on fetal sex.
Phenotypic Associations Among Cell Cycle Genes in Saccharomyces cerevisiae
Authors: Bermudez Rosa M , Wu Peter I-Fan , Callerame Deanna , Hammer Staci , Hu James C , Polymenis Michael
Published: May 2020

A long-standing effort in biology is to precisely define and group phenotypes that characterize a biological process, and the genes that underpin them. In Saccharomyces cerevisiae and other organisms, functional screens have generated rich lists of phenotypes associated with individual genes. However, it is often challenging to identify sets of phenotypes and genes that are most closely associated with a given biological process. Here, we focused on the 166 phenotypes arising from loss-of-function and the 86 phenotypes from gain-of-function mutations in 571 genes currently assigned to cell cycle-related ontologies in S. cerevisiae. To reduce this complexity, we applied unbiased, computational approaches of correspondence analysis to identify a minimum set of phenotypic variables that accounts for as much of the variability in the data as possible. Loss-of-function phenotypes can be reduced to 20 dimensions, while gain-of-function ones to 14 dimensions. We also pinpoint the contributions of phenotypes and genes in each set. The approach we describe not only simplifies the categorization of phenotypes associated with cell cycle progression but might also potentially serve as a discovery tool for gene function.
Effects of Energy Consumption on GDP: New Evidence of 24 Countries on Their Natural Resources and Production of Electricity
Authors: Khan Rabnawaz , Kong YuSheng
Published: May 2020

Because of rapid economic expansion, China, the USA, and India have become the largest energy producers and sources of CO2 emissions in the world. They burned over 45% of global fuels in 2016. Meanwhile, the developing strategies of 24 polluted states to decrease fossil energy consumption without additional economic output. This paper explores the effect of world top polluted countries’ CO2 emission, their GDP and production of electricity by potential indicators and identifies the basic factors that contribute to changes in an environment where petroleum, natural gas, coal, nuclear, biomass, and other renewable energy and hydroelectric sources are examined with GDP per capita. We estimate our data for the period from 1968 to 2017 and use the GLM model. The results show that more production of electricity is causing abnormal CO2 emissions. The Granger causality test shows that there is a unidirectional relationship between energy consumption and economic advancement. Also, there is a short-run bidirectional causality that exists among the energy indicators. We find a unilateral causality between energy consumption and economic growth. Therefore, the consumption of energy might be conductive of 24 (polluted) countries and better economic development; the consumption of energy may be failsafe and guaranteed, while we should limit the resources of countries.
Employment at 55+: Do We Want to Work Longer in Lithuania?
Authors: Zitikytė Kristina
Published: May 2020

The Lithuanian population is aging, and it causes many difficulties for public finances by increasing expenditures on health care, long-term care, and pensions, and also for the labor market by creating labor shortages. One of the ways to cope with demographic aging is to rise the employment rate of older people. According to Eurostat, the employment rate of the elderly aged 55–64 years increased from 49.6 percent in 2005 to 68.5 percent in 2018 in Lithuania and it is higher than the average employment rate of older workers in European Union, which was 58.7 percent in 2018. This paper focuses on older people in Lithuania, aged 55 and over, trying to answer a question whether the elderly in Lithuania willingly work or try to find alternatives such as receiving long-term social insurance benefits. The research findings show that the activity of older people in the labor market grows, and even the share of people with disabilities staying in the labor market increases. However, this analysis also shows that older people are more under risk to lose their job during an economic crisis, and this suggests that trying to find work alternatives can be closely related to one’s economic situation. Moreover, health problems remain one of the main factors limiting the activity of older people in the labor market. It is also noticeable that some labor force reserves exist among people with disabilities and this supposes that creating better adapted working conditions for older and disabled workers in Lithuania could probably contribute to meeting the needs of an aging workforce.