bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis the Effect of Leadership to Safety Climate, Safety Culture and Safety Performance
Authors: Khasanah Nurul , . Kholil , . Sugiarto 
Published: November 2019

In this era of globalisation, occupational safety is the main spotlight in every industry. By implementing a safety management system in the workplace, it is hoped that it can shape the safety climate and positive safety culture, which can be assessed from zero accidents, workforce behaviour and support for the safety of oneself and coworkers.
The main objective of this research was to analyse the effect of leadership on safety climate, safety culture and safety performance. This research was conducted at a plastic packaging manufacturer, PT. Berlina Tbk Tangerang with 133 participants and used the SEM (Structural Equation Modeling) analysis method.
The results of the research analysis showed that leadership, safety climate and safety culture have a simultaneous significant effect on 83% safety performance.
A Study on Effect of Sleep Patterns on Body Fat Mass of School Going Children (8-10- Years Old) in Mumbai City
Authors: Satra Nehal , Sengupta Rupali 
Published: November 2019

Aims: To study the effect of sleep patterns on body fat mass of school going children (8-10-year-old) in Mumbai city.
Study Design: Body fat mass was analyzed using Inbody 120 body composition analyzer. Total 388 subjects were selected for the study.
Place and Duration of Study: The period required to carry out study was from November 2018 to March 2019. 388 subjects (male and female) participated from public to private schools in Mumbai city for the study.
Methodology: Total 388 subjects (male and female) participated from 5 schools ranging from public to private school were selected from Mumbai city, (Maharashtra, India). Inbody 120 body composition analyzer was used to assess body fat for the subjects. SPSS version 20 was used for data analysis.
Results: A positive correlation was observed between wakeup timings and body fat mass at p≤0.05 (0.00). However, the habit of snoring showed highly significant difference at p≤0.05 for body fat mass (0.00) and fat free mass (0.00).
Conclusion: It was concluded that sleep patterns had a significant impact on body fat mass. Therefore, the sleep timings and wakeup timings need to be observed for the children in their growing age as it may have deep impact on child’s body type.
Chikungunya Virus: An Emerging Threat to South East Asia Region
Authors: Haroon-Or-Rashid Md , Monowar Hossen Patwary Md , Tariquzzaman Md , Imtiaz Ahmed , N. Rubaia Islam Bony M. 
Published: November 2019

Chikungunya virus is an alphavirus of the Togaviridae family, positive-strand RNA genome, which was first recorded in Tanzania in 1952 and since then Chikungunya has been reported in Burma, Bangladesh, Thailand, Cambodia, Vietnam, India, Sri Lanka, Indonesia, West Africa and the Philippines. In the recent decade, Chikungunya is a severe global public health concern. Chikungunya predominantly transmitted by bites of mosquitoes of the Aedes genus (Aedes aegypti and Aedes albopictus) the same mosquito that transmits Dengue fever, only female mosquitoes are infective because they require a blood meal for the formation of the egg. Vertical transmission occurs between mother and fetus. The infected Chikungunya mosquitoes can be found for biting throughout daylight hours especially early morning and late afternoon. The Chikungunya viral disease occurs in victims of all ages in both sexes. Following a bite by an infected mosquito, the disease manifests itself after an average incubation period of 2-4 days (range: 3-12 days), predominant clinical features include, high fever, joint pain, rash, myalgia etc. Serum specimen is collected within 5 days for the Reverse Transcriptase- Polymerase Chain Reaction (RT –PCR) to detect the viral RNA and ELISA/ICT detect anti-Chikungunya antibody (IgM and IgG) after 1st weak of infection. Specific treatment and a recognised vaccine are not available for Chikungunya, but symptomatic treatments are available like paracetamol and painkiller for high fever and local pain. Elimination of mosquito habitats is the best way to prevent and control of Chikungunya infection.
Prevalence of Intestinal Parasitic Infections among Patients Attending Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria
Authors: Mohammed K. , Gulma M. Kabiru , Yahaya M. , Spencer T. H. I. , Nataala S. U. , Garba M. K. , Imam A. U. , Aschroft O. F. , Micheal U. 
Published: November 2019

Background: Intestinal parasitic infection is one of the major health issue in developing countries particularly in Sub -Saharan Africa. It has been estimated to affect about 3.5 billion people globally and 450 million people are thought to be ill as a result of such infections, the majority being children.
Aims: The study was aimed at determining the prevalence and associated risk factors of intestinal parasitic infections among patients attending Usmanu Danfodiyo University Teaching Hospital, Sokoto, Nigeria.
Study Design: This was a cross-sectional, descriptive study.
Place and Duration of Study: This study was conducted among patients attending Usmanu Danfodiyo University, Teaching Hospital, Sokoto, Sokoto state, between May to November 2017.
Methodology: A total of 245 participants were enrolled in the study. Standard parasitological examination was carried out on stool samples using microscopic examination.
Results: Finding revealed that 29 (11.8%) were positive for intestinal parasitic infections. Males recorded higher prevalence than the females with 19 (11.9%) and 10 (11.7%), respectively.
Conclusion: Low level of education, occupational status, poor water supply were among the significant risk factors for these infections. Prevalence and intensity of parasitic infections among the study community could be reduce by Creating awareness, level of sanitation, water supply and deworming programme among school children.
Prevalence Rate of Vulvovaginal Candidiasis among Women Attending Abia State Teaching Hospital Aba, Nigeria
Authors: Azike C. A. , Agi V. N. , Uwalaka D. 
Published: November 2019

Background: Most women regard any secretion from the vagina as abnormal discharge and the first task for primary health care giver is to confirm whether it is physiological or pathological.
Aim: The aim of this study is to determine the prevalence rate of Candida infection among women, attending Abia State teaching hospital, Abayi Aba. A structured questionnaire was administered to obtain demographic data.
Methodology: One hundred high vaginal swab samples were collected from both symptomatic and asymptomatic non-pregnant women between ages 15-45 years old. These specimens were analyzed with standard microbiological techniques. The swabs were inoculated on sabouraud dextrose agar and incubated at 37 degrees centigrade for 48hrs. Wet preparation was examined microscopically for presence of yeast cells. Gram staining was also done. Germ tube test was carried out to confirm Candida albicans species.
Results: Of the 100 specimens analyzed, the overall prevalence of Candida species was 57% (n=57). There were 47 symptomatic participants and 53 asymptomatic participants in the study. Of the 47 symptomatic women, 36 had Candida species while 21 out of 53 asymptomatic women had Candida species. The participants were also grouped according to their socio-economic status and the result revealed that traders were most affected with prevalence rate of 35.1% while the housewives were least affected with prevalence rate of 14.0%.
Conclusion: This study recorded higher prevalence of vulvovaginal candidiasis among both symptomatic and asymptomatic non-pregnant women in Abia State teaching hospital. Regular checkup and good hygiene practice are critical in order to forestall avoidable complications.
Improving Detection of Trichomonas vaginalis Infection among Adult Females in a Resource-poor Setting in Ogoniland, Niger Delta, Nigeria
Authors: Nwokah Easter Godwin , Monday Ziganubari Monica , Azike Chidimma Anthonia 
Published: November 2019

Aim: Trichomonas vaginalis infection is a neglected tropical parasitic infection affecting mostly women of child bearing age, especially those of low socio-economic status and those that have poor hygiene lifestyle. Unfortunately, the traditional wet mount microscopy routinely used in the rural health care settings, for the detection of this parasite from clinical specimen, hardly detect this parasite (false negative), thus making the diagnosis of trichomoniasis a huge challenge in the rural settings. The aim of this study was to determine the prevalence rate of Trichomonas vaginalis among adult females in Bori, a rural resource-poor setting in Ogoniland, Niger Delta, Nigeria using modified Parasite Concentration-Giemsa staining technique.
Study Design: This was a randomized study of adult females attending Government Health Centers in the Ogoni areas of Rivers State, Nigeria between April and August, 2018.
Methodology: A total of five hundred (500) women, grouped into married (128) and unmarried (372), were enrolled in this study. A structured questionnaire was also administered to the participants for demographic data. Using sterile specula, high vaginal swab samples were collected and analyzed using the wet mount preparation and 10% Giemsa staining of centrifuged specimens.
Results: Results obtained showed that the prevalence rate was 1.8% (9 out of 500 subjects). The sensitivity of wet mount and Giemsa stain methods were 56.2% and 100% respectively while their specificity were 100% and 98.2% respectively. While wet mount detected 0.4%, Giemsa staining method detected 1.8%. Two (1.6%) out of 128 married women examined had T. vaginalis while 7 (1.9%) out of 372 unmarried women examined had T. vaginalis.
Conclusion: Although study recorded a low prevalence, Trichomonas vaginalis infections, exists in rural areas of Rivers State and therefore a source of concern because of its attendant morbidities. Early detection using improved diagnostic methods and in this case, the relatively inexpensive Parasite Concentration-Giemsa staining method, will improve management within the rural setting. A meta screening of more rural communities is advocated.
Lewis Acid‐Catalyzed Stereoselective α‐Addition of Chiral Aldehydes to Cyclic Dienol Silanes: Aqueous Synthesis of Chiral Butenolides
Authors: Adamkiewicz Anna , Węglarz Izabela , Butkiewicz Aleksandra , Woyciechowska Marta , Mlynarski Jacek 
Published: November 2019

AbstractThe stereoselective α‐addition to cyclic dienol silanes has rarely been exploited, in contrast to the well‐studied γ‐addition of conjugated butenolides. In this study, an unprecedent catalytic Mukaiyama aldol α‐addition of 2‐trimetylsiloxy furan to optically pure aldehydes in water‐containing solvents is reported. The synthetic utility of this concept was demonstrated in the efficient synthesis of six bioactive natural products: vitexolide D, curcucomosin C, villosin, chinensine C, (+)‐coronarin E and (E)‐labda‐7,11,13‐trien‐16,15‐olid.magnified image
Ultrahigh Nitrogen Doping of Carbon Nanosheets for High Capacity and Long Cycling Potassium Ion Storage
Authors: Chang Xingqi , Zhou Xiaolong , Ou Xuewu , Lee Chun‐Sing , Zhou Jiwei , Tang Yongbing 
Published: November 2019

AbstractPotassium‐based energy storage devices (PESDs) are promising candidates for large‐scale energy storage applications owing to potassiums abundant in nature, the low standard redox potential (−2.93 V for K/K+ vs the standard hydrogen electrode) of potassium (K), and high ionic conductivity of K‐ion based electrolytes. However, lack of proper cathode and anode materials hinder practical applications of PESDs. In this work, carbon nanosheets doped with an ultrahigh content of nitrogen (22.7 at%) are successfully synthesized as an anode material for a K‐ion battery, which delivers a high capacity of 410 mAh g−1 at a current density of 500 mA g−1, which is the best result among the carbon based anodes for PESDs. Moreover, the battery exhibits an excellent cycling performance with a capacity retention of 70% after 3000 cycles at a high current density of 5 A g−1. In situ Raman, galvanostatic intermittent titration, and density functional theory calculations reveal that the ultrahigh N‐doped carbon nanosheet (UNCN) simultaneously combines the diffusion and pseudocapacitive mechanisms together, which remarkably improves its electrochemical performances in K‐ion storage. These results demonstrate the good potential of UNCNs as a high‐performance anode for PESDs.
Workers’ compensation claims for traumatic brain injuries among private employers—Ohio, 2001‐2011
Authors: Konda Srinivas , Al‐Tarawneh Ibraheem S. , Reichard Audrey A. , Tiesman Hope M. , Wurzelbacher Steven J. , Pinkerton Lynne E. , Meyers Alysha R. , Hendricks Scott A. , Tseng Chih‐Yu , Lampl Michael P. , Robins David C. 
Published: November 2019

AbstractBackgroundThe purpose of this analysis was to identify and prioritize high‐risk industry groups for traumatic brain injury (TBI) prevention efforts.MethodsWorkers with TBI from 2001 to 2011 were identified from the Ohio Bureau of Workers’ Compensation data. To prioritize industry groups by claim type (lost‐time (≥8 days away from work) and total claims) and injury event categories, we used a prevention index (PI) that averaged TBI counts and rate ranks (PI = (count rank + rate rank)/2). TBI rates per 10 000 estimated full‐time equivalent (FTE = 2000 h/y) workers were calculated.ResultsFrom 2001 to 2011, 12 891 TBIs were identified among private employers, resulting in a rate of 5.1 TBIs per 10 000 FTEs. Of these, 40% (n = 5171) were lost‐time TBIs, at a rate of 2.0 per 10 000 FTEs. Spectator Sports had the highest lost‐time TBI rate (13.5 per 10 000 FTEs), whereas General Freight Trucking had the greatest number of lost‐time TBIs (n = 293). Based on PIs, General Freight Trucking ranked first for lost‐time TBIs for all injury events combined. Several industry groups within Construction, General and Specialized Freight Trucking, Services to Building and Dwellings, Employment Services, and Restaurants and Other Eating Places ranked high across multiple injury event categories for lost‐time TBIs.ConclusionsThe high‐ranking industry groups identified from our study can be used to effectively direct occupational TBI prevention efforts.
Microwave‐Assisted Synthesis as an Efficient Method to Enhance the Catalytic Activity of Zr‐Based Metal Organic Framework UiO‐66 in a Heterocyclization Reaction
Authors: Nguyen Linh Ho Thuy , Nguyen Trang Thi Thu , Dang Y. Thi , Tran Phuong Hoang , Le Hoang Doan Tan 
Published: November 2019

AbstractZr‐based metal‐organic frameworks have been considered promising heterogeneous catalysts in various reactions. It has been proven that the defect sites in these frameworks, which result from deficiency of linkers, could act as the reaction active sites. In this work, microwave irradiation was used for rapid synthesis and increasing defects on Zr6 clusters of metal‐organic framework UiO‐66. Powder X‐ray diffraction, thermal gravimetric analysis, and N2 sorption isotherms were performed to characterize and calculate the defect number in the framework. UiO‐66 prepared by microwave method for a few minutes could reach 1.8 missing linkers per cluster. The material with acetic acid as a co‐catalyst showed highly heterogeneous catalytic activity in the solvent‐free heterocyclization of 2,2‐disubstituted 2,3‐dihydroquinazolin‐4(1H)‐ones from anthranilamide and ketones/aldehydes. The synthetic scheme consisted of zirconium cluster catalysed carbonyl group of anthranilamide to achieve the C−N propitious combination and succeeding ring closure process.
Visible Light‐Mediated C2‐Quaternarization of N‐Alkyl Indoles through Oxidative Dearomatization using Ir(III) Catalyst
Authors: Shukla Gaurav , Dahiya Anjali , Alam Tipu , Patel Bhisma K. 
Published: November 2019

AbstractIn the presence of [Ir(dtbbpy)(ppy)2]PF6 photocatalyst and white LEDs, one‐third of N‐alkylated indoles undergo oxidative dearomatization and serves twice as the C2‐electrophilic partner. The remaining two‐third act as the C3‐nucleophile, prompting two sequential electrophilic substitutions with the in situ generated C2‐electrophile that leads to C2‐quaternary indolinones at room temperature.
Detecting Counterion Dynamics in DNA–Protein Association
Authors: Pletka Channing C. , Nepravishta Ridvan , Iwahara Junji 
Published: November 2019

AbstractDue to a high density of negative charges on its surface, DNA condenses cations as counterions, forming the so‐called “ion atmosphere”. Although the release of counterions upon DNA–protein association has been postulated to have a major contribution to the binding thermodynamics, this release remains to be confirmed through a direct observation of the ions. Herein, we report the characterization of the ion atmosphere around DNA using NMR spectroscopy and directly detect the release of counterions upon DNA–protein association. NMR‐based diffusion data reveal the highly dynamic nature of counterions within the ion atmosphere around DNA. Counterion release is observed as an increase in the apparent ionic diffusion coefficient, which directly provides the number of counterions released upon DNA–protein association.
Cobalt(III)‐Catalyzed C−H Amidation of Dehydroalanine for the Site‐Selective Structural Diversification of Thiostrepton
Authors: Scamp Ryan J. , deRamon Edward , Paulson Eric K. , Miller Scott J. , Ellman Jonathan A. 
Published: November 2019

AbstractThiostrepton is a potent antibiotic against a broad range of Gram‐positive bacteria, but its medical applications have been limited by its poor aqueous solubility. In this work, the first C(sp2)−H amidation of dehydroalanine (Dha) residues was applied to the site selective modification of thiostrepton to prepare a variety of derivatives. Unlike all prior methods for the modification of thiostrepton, the alkene framework of the Dha residue is preserved and with complete selectivity for the Z‐stereoisomer. Additionally, an aldehyde group was introduced by C−H amidation, enabling oxime ligation for the installation of an even greater range of functionality. The thiostrepton derivatives generally maintain antimicrobial activity, and importantly, eight of the derivatives displayed improved aqueous solubility (up to 28‐fold), thereby addressing a key shortcoming of this antibiotic. The exceptional functional group compatibility and site selectivity of CoIII‐catalyzed C(sp2)−H Dha amidation suggests that this approach could be generalized to other natural products and biopolymers containing Dha residues.
A Deep‐Cycle Aqueous Zinc‐Ion Battery Containing an Oxygen‐Deficient Vanadium Oxide Cathode
Authors: Liao Meng , Wang Jiawei , Ye Lei , Sun Hao , Wen Yunzhou , Wang Chuang , Sun Xuemei , Wang Bingjie , Peng Huisheng 
Published: November 2019

AbstractRechargeable aqueous zinc‐ion batteries are attractive because of their inherent safety, low cost, and high energy density. However, viable cathode materials (such as vanadium oxides) suffer from strong Coulombic ion–lattice interactions with divalent Zn2+, thereby limiting stability when cycled at a high charge/discharge depth with high capacity. A synthetic strategy is reported for an oxygen‐deficient vanadium oxide cathode in which facilitated Zn2+ reaction kinetic enhance capacity and Zn2+ pathways for high reversibility. The benefits for the robust cathode are evident in its performance metrics; the aqueous Zn battery shows an unprecedented stability over 200 cycles with a high specific capacity of approximately 400 mAh g−1, achieving 95 % utilization of its theoretical capacity, and a long cycle life up to 2 000 cycles at a high cathode utilization efficiency of 67 %. This work opens up a new avenue for synthesis of novel cathode materials with an oxygen‐deficient structure for use in advanced batteries.
Copper‐Catalyzed Enantioselective Allylic Alkylation with a γ‐Butyrolactone‐Derived Silyl Ketene Acetal
Authors: Jette Carina I. , Tong Z. Jaron , Hadt Ryan G. , Stoltz Brian M. 
Published: November 2019

AbstractHerein, we report a Cu‐catalyzed enantioselective allylic alkylation using a γ‐butyrolactone‐derived silyl ketene acetal. Critical to the development of this work was the identification of a novel mono‐picolinamide ligand with the appropriate steric and electronic properties to afford the desired products in high yield (up to 96 %) and high ee (up to 95 %). Aryl, aliphatic, and unsubstituted allylic chlorides bearing a broad range of functionality are well‐tolerated. Spectroscopic studies reveal that a CuI species is likely the active catalyst, and DFT calculations suggest ligand sterics play an important role in determining Cu coordination and thus catalyst geometry.
Controllable Conversion of CO2on Non‐Metallic Gold Clusters
Authors: Yang Dan , Pei Wei , Zhou Si , Zhao Jijun , Ding Weiping , Zhu Yan 
Published: November 2019

AbstractGold nanoparticles in metallic or plasmonic state have been widely used to catalyze homogeneous and heterogeneous reactions. However, the catalytic behavior of gold catalysts in non‐metallic or excitonic state remain elusive. Atomically precise Aunclusters (n=number of gold atoms) bridge the gap between non‐metallic and metallic catalysts and offer new opportunities for unveiling the hidden properties of gold catalysts in the metallic, transition regime, and non‐metallic states. Here, we report the controllable conversion of CO2over three non‐metallic Aunclusters, including Au9, Au11, and Au36, towards different target products: methane produced on Au9, ethanol on Au11, and formic acid on Au36. Structural information encoded in the non‐metallic clusters permits a precise correlation of atomic structure with catalytic properties and hence, provides molecular‐level insight into distinct reaction channels of CO2hydrogenation over the three non‐metallic Au catalysts.
Manganese‐Catalyzed β‐Methylation of Alcohols by Methanol
Authors: Schlagbauer Martin , Kallmeier Fabian , Irrgang Torsten , Kempe Rhett 
Published: November 2019

AbstractWe report an earth‐abundant‐metal‐catalyzed double and single methylation of alcohols. A manganese catalyst, which operates at low catalyst loadings and short reaction times, mediates these reactions efficiently. A broad scope of primary and secondary alcohols, including purely aliphatic examples, and 1,2‐aminoalcohols can be methylated. Furthermore, alcohol methylation for the synthesis of pharmaceuticals has been demonstrated. The catalyst system tolerates many functional groups among them hydrogenation‐sensitive examples and upscaling is easily achieved. Mechanistic investigations are indicative of a borrowing hydrogen or hydrogen autotransfer mechanism involving a bimetallic K‐Mn catalyst. The catalyst accepts hydrogen as a proton and a hydride from alcohols efficiently and reacts with a chalcone via hydride transfer.