bluuebunny/crossref_metadata_2025_split huggingface dataset:
Future fertility of patients with zero oocytes yield in their first IVF cycle attempt
Authors: Orvieto Raoul , Farhi Jacob , Nahum Ravit , Basch Shani , Haas Jigal , Aizer Adva 
Published: February 2021

Purpose
We aim to estimate the future fertility of patient undergoing their first IVF cycle attempt with no oocyte retrieved, and to identify factors that might predict those who will conceive in subsequent IVF cycle attempt.

Methods
A cohort retrospective study of all consecutive women attending our IVF unit, for their first IVF cycle attempt, between January 2013 to December 2019, who reached the ovum pick-up (OPU) stage with zero oocyte retrieved. Patients’ characteristics and infertility-treatment-related variables in the first IVF cycle attempt were compared between those who conceived in a subsequent cycle and those who did not. Moreover, infertility-treatment-related variables during successful cycles resulting in pregnancy were compared to those without.

Results
59 met the study inclusion criteria, yielding zero oocytes. During the follow-up period, 12 (20.3%) women conceived (one conceived twice), and 8 (14%) gave birth to a live infant. Cumulative live-birth rate per OPU and per patients were 4% and 14%, respectively. Clinical pregnancies were achieved after 3.61+1.4 cycle attempts (range: 1–6), with no live-births following the fifth IVF cycle attempt. No in-between group differences were observed in ovarian stimulation variables of their first IVF cycle attempt. Moreover, in those cycles resulting in pregnancy, patients achieved a significantly higher number of fertilized oocytes (2.15+1.5 vs 0.94+1.5, respectively; p<0.01) and a higher mean top-quality embryos (TQE) (1.76+0.9 vs 0.73+1.2, respectively; p<0.003).

Conclusion
Women yielding zero oocytes at their first IVF cycle attempt, may achieve 14% cumulative live-birth rate after 5 IVF cycle attempts. Moreover, those who conceived in subsequent IVF cycle attempts were those achieving 2 or more fertilized oocytes/TQE.
Perceptions of hospital staff on the performance of Quality Improvement teams in the regional referral hospitals in Tanzania: A cross sectional study
Authors: Kacholi Godfrey , Mahomed Ozayr H. 
Published: February 2021

Background
To ensure patient-centered quality care for all citizens, Quality Improvement (QI) teams have been established across all public hospitals in Tanzania. However, little is known about how hospital staff perceive the performance of hospital QI teams in Tanzania. This study assessed the perceptions of hospital staff of the performance of QI teams in selected regional referral hospitals in Tanzania.

Methods
This cross-sectional study was conducted in four selected regional referral hospitals between April and August 2018. A self-administered questionnaire was used to collect data from 385 hospital staff in the selected hospitals. Measures of central tendency, proportions and frequencies were used to assess level of perception of hospital staff. Bivariate and multivariate logistic regression was used to test the association between the perceptions of hospital staff of the performance of QI teams and their socio-demographic factors.

Results
The overall mean perception score of the performance of QI teams was 4.84 ± 1.25. Hospital staff aged 35 and over (n = 130; 68%), female hospital staff (n = 144; 64%), staff in clinical units (n = 136; 63%) and staff with post-secondary education (n = 175; 63%) perceived that the performance of QI teams was good. Improved hospital cleanliness was viewed as strength of QI teams, whilst inadequate sharing of information and inadequate reduction in patient waiting time were considered as weaknesses of QI team performance. Bivariate and multivariate logistic regression analyses showed that there was no statistical association between the perceptions of hospital staff and their socio-demographic characteristics.

Conclusion
The overall perception of hospital staff of the performance of QI teams was good, with the main limitation being sharing of hospital QI plans with hospital staff. Hospital staff should be involved in the development and implementation of hospital QI plans, which would promote a positive perception of staff of the performance of QI teams and enhance sustainability of QI teams.
Impact of the COVID-19 shutdown on orthopedic trauma numbers and patterns in an academic Level I Trauma Center in Berlin, Germany
Authors: Maleitzke Tazio , Pumberger Matthias , Gerlach Undine A. , Herrmann Carolin , Slagman Anna , Henriksen Louise S. , von Mauchenheim Frederic , Hüttermann Nils , Santos Anabel N. , Fleckenstein Florian N. , Rauch Geraldine , Märdian Sven , Perka Carsten , Stöckle Ulrich , Möckel Martin , Lindner Tobias , Winkler Tobias 
Published: February 2021

BackgroundThe COVID-19 pandemic led to the implementation of drastic shutdown measures worldwide. While quarantine, self-isolation and shutdown laws helped to effectively contain and control the spread of SARS-CoV-2, the impact of COVID-19 shutdowns on trauma care in emergency departments (EDs) remains elusive.MethodsAll ED patient records from the 35-day COVID-19 shutdown (SHUTDOWN) period were retrospectively compared to a calendar-matched control period in 2019 (CTRL) as well as to a pre (PRE)- and post (POST)-shutdown period in an academic Level I Trauma Center in Berlin, Germany. Total patient and orthopedic trauma cases and contacts as well as trauma causes and injury patterns were evaluated during respective periods regarding absolute numbers, incidence rate ratios (IRRs) and risk ratios (RRs).FindingsDaily total patient cases (SHUTDOWN vs. CTRL, 106.94 vs. 167.54) and orthopedic trauma cases (SHUTDOWN vs. CTRL, 30.91 vs. 52.06) decreased during the SHUTDOWN compared to the CTRL period with IRRs of 0.64 and 0.59. While absolute numbers decreased for most trauma causes during the SHUTDOWN period, we observed increased incidence proportions of household injuries and bicycle accidents with RRs of 1.31 and 1.68 respectively. An RR of 2.41 was observed for injuries due to domestic violence. We further recorded increased incidence proportions of acute and regular substance abuse during the SHUTDOWN period with RRs of 1.63 and 3.22, respectively.ConclusionsWhile we observed a relevant decrease in total patient cases, relative proportions of specific trauma causes and injury patterns increased during the COVID-19 shutdown in Berlin, Germany. As government programs offered prompt financial aid during the pandemic to individuals and businesses, additional social support may be considered for vulnerable domestic environments.
Addressing the huge poor–rich gap of inequalities in accessing safe childbirth care: A first step to achieving universal maternal health coverage in Tanzania
Authors: Bintabara Deogratius 
Published: February 2021

Introduction
Despite skilled attendance during childbirth has been linked with the reduction of maternal deaths, equality in accessing this safe childbirth care is highly needed to achieving universal maternal health coverage. However, little information is available regarding the extent of inequalities in accessing safe childbirth care in Tanzania. This study was performed to assess the current extent, trend, and potential contributors of poor-rich inequalities in accessing safe childbirth care among women in Tanzania.

Methods
This study used data from 2004, 2010, and 2016 Tanzania Demographic Health Surveys. The two maternal health services 1) institutional delivery and 2) skilled birth attendance was used to measures access to safe childbirth care. The inequalities were assessed by using concentration curves and concentration indices. The decomposition analysis was computed to identify the potential contributors to the inequalities in accessing safe childbirth care.

Results
A total of 8725, 8176, and 10052 women between 15 and 49 years old from 2004, 2010, and 2016 surveys respectively were included in the study. There is an average gap (>50%) between the poorest and richest in accessing safe childbirth care during the study period. The concentration curves were below the line of inequality which means women from rich households have higher access to the institutional delivery and skilled birth attendance inequalities in accessing institutional delivery and skilled birth attendance. These were also, confirmed with their respective positive concentration indices. The decomposition analysis was able to unveil that household’s wealth status, place of residence, and maternal education as the major contributors to the persistent inequalities in accessing safe childbirth care.

Conclusion
The calls for an integrated policy approach which includes fiscal policies, social protection, labor market, and employment policies need to improve education and wealth status for women from poor households. This might be the first step toward achieving universal maternal health coverage.
Science in mobile apps for education: tackling online learning within pandemic outbreak
Authors: Kamarudin Nhidayu , Ong Eileen , Chung WS 
Published: February 2021

In adapting the issues of pandemic, educational sectors in Malaysia from the lower school level till university levels are encouraged to forecast any specific tools that may help in cater the needs in utilizing online learning. It is by right the issues that been face by global outbreak for everyone on earth as Covid19 that embarked big challenges in face to face and normal daily classes and learning method. Therefore this paper is written to give a general overview, uncover the possible models in used and technologies that may overcome the needs of online education specifically focused for improving the usage of online educational tools especially with the use of mobile ap-plication for learning itself. The concept of manual for pen and paper reporting can makes the reporting very slow especially in terms of communication and sharing of information. Plus, within the outbreak patterns may will provide inaccurate information and may also late results to be achieved. This paper is discussing model in plan and the implementation proposed with overcome results of the post results questionnaire conducted to get the major feedback on usage of the current proposed app.Â Â Â
Effect of carissa edulis (VAHL) apocynaceae stem bark on hematological parameters in cclÂ¬4 induced albino rats
Authors: Y. Izam Y. , B. Bukar B. 
Published: February 2021

Aim/Objectives: There are claims that Carissa edulis has positive effects on hematological parameters. The present study was conducted to evaluate the safety and claimed hematological effect of Carissa edulis on rats intoxicated with carbon tetrachloride.Method: Thirty six male albino rats were randomly allotted to six groups of six rats per group. The animals were treated with (250, 500 and 1000mg/kg of the stem bark extract of Carissa edulis. The extract was administered daily by gavage to the animals for 28 consecutive days. The 50%v/v Carbon tetrachloride (CCl4) and olive oil was gavaged twice a week. The animals of the normal control group were given 5ml/kg of distilled water while those of the CCl4 group were administered CCl4 only twice a week.Result: Results of the study showed that the CCl4 group caused a significant decrease in most of the hematological parameters while the extract treated groups showed a significant increase in these parameters.Discussion / Conclusion: This suggests that the ethanolic stem bark extract has erythropoietic, thrombopoietic and positive effect on the immune system.Â Â Â
Del cimarronismo al reconocimiento constitucional colombiano de las minorías afro étnicas, una mirada desde Taylor y Kymlicka
Authors: ALVARADO SUAREZ GIOVANNY , Prado Martínez Evelyn  Gineth 
Published: February 2021

Este texto tendrá como objetivo analizar si las poblaciones afrocolombianas alcanzaron el pleno reconocimiento constitucional a través de procesos que justificaron y explicaron la necesidad de una política de reconocimiento. Aquí el lector tendrá la posibilidad de encontrar articuladas las categorías históricas, filosóficas y jurídicas con respecto a esta minoría. Con el tiempo, éste colectivo y gracias a las tradiciones libertarias, logran importantes avances establecidos en la Constitución Nacional de 1991, pero esto no fuere posible sin haber pasado primero por luchas y resistencias en las Indias sumado al impacto que tuvo la noción del multiculturalismo en el siglo XX. Es por ello que a lo largo del escrito se evidenciará un tren con tres vagones: una narración histórica acerca de la diáspora afro, pasando posteriormente por el impacto de la noción de la Política del reconocimiento asociado al multiculturalismo, y, finalizando con la garantía que ofrecen los Principios constitucionales para la comunidad afroétnica.
De tal manera que el lector encontrará categorías relevantes, tales como: la cuestión negra en el proceso colonizador en América, el debate acerca del reconocimiento y la política pública con respecto a las minorías; y, el impacto de la política de reconocimiento ensamblada en la Constitución Política de Colombia
Tekst i jego dodatki, dodatki i tekst – od supersytetmu rozrywkowego do uniwersum kulturowego
Authors: Dominas Konrad 
Published: February 2021

Celem artykułu jest analiza nowych form relacji między tekstem a jego dodatkami: supersystemem rozrywkowym opartym na transmedialnej interaktywności (koncepcja Marshy Kinder); opowiadaniem transmedialnymo (koncepcja Henry’ego Jenkinsa); uniwersum kulturowym (koncepcja własna na podstawie bogatej literatury przedmiotu). Teorie te zostały zaprezentowane jako pewnego rodzaju proces polegający na zacieraniu się granic między tekstualnością a medialnością we współczesnej literaturze i kulturze popularnej.
Modernizm, imperium i „podróż do”
Authors: Snaith Anna 
Published: February 2021

Artykuł stanowi fragment wprowadzenia do monografii zatytułowanej Modernist Voyages: Colonial Women Writers in London 1890–1945 (CUP 2014). Została w nim opracowana analityczna podbudowa lektury „londyńskiego” pisarstwa kolonialnych kobiet, odbywających w okresie modernizmu „podróż do”, podbudowa, która podkreśla wagę genderu w nowych badaniach nad modernizmem. Artykuł rozpoczyna się namysłem nad kontrastującymi sprawozdaniami z „przybycia” dwóch karaibskich pisarzy: Uny Marson i C.L.R. Jamesa, którzy dotarli do Londynu w 1932 roku. Następnie zostaje zdefiniowany obszar interesującego autorkę artykułu pisarstwa, obejmującego postaci takie jak Jean Rhys, Sarojini Naidu, Katherine Mansfield i Olive Schreiner, jak również sposoby uczestnictwa ich prac w narracjach obronnych dotyczących zarówno genderu, jak i imperium. Powieści, opowiadania i autobiografie autorstwa tej grupy podróżujących kobiet kształtowane są przez politykę feministyczną i antykolonialną. W artykule omówione zostały sposoby uczestnictwa oraz przełamywania przez autorki dominujących dyskursów handlu imperialnego, wyższości serca imperium i kultury wystawiania na pokaz. Pisarki te są figurami nowoczesności, a ich transgresyjna mobilność ujawnia się w ramach przeobrażającego się imperium oraz ewoluujących idei kobiecego związku z tożsamością narodową.
Social Image Concern and Reference Point Formation
Authors: Hashidate Yosuke 
Published: February 2021

Abstract
This paper develops an axiomatic context-dependent model of social image concerns. Allowing for context-dependence based on choice sets, it examines how context-dependence impacts social image concerns, in particular how a decision maker exhibits various social emotions stemming from their intrinsic reference point, which may not be captured by conforming to social norms. To elicit the intrinsic reference point, this paper provides weaker versions of Strategic Rationality and Independence, in addition to the basic axioms, to characterize the model of the Reference-Dependent Image-Conscious utilitarian. This paper also examines how social emotions stemming from the intrinsic reference point are related to preference reversals as violations of the Weak Axiom of Revealed Preference (WARP). Finally, this paper considers the relationship between social image concerns and intrinsic reciprocity. The findings demonstrate that social image plays a large role and the model developed illustrates a condition in which cooperation is sustained in prisoner’s dilemma games.
Foreign Direct Investment and Crime Linkage: Drug Traffic and Kidnapping
Authors: Espinosa Ramirez Rafael Salvador 
Published: February 2021

Abstract
We develop a theoretical model in which a country hosts foreign investment in the presence of a drug dealer, acting as a leader, and a drug seller, acting as a follower. A policy addressed to eradicate the drug trafficking encourages the kidnapping activity, and increase the security cost of firms. When the drug is not consumed in the host country the best policy is not to fight against drug trafficking. When the drug is consumed in the host country the optimal policy depends on the social marginal disutility of drug consumption respect to ransom paid by firms. In this case, when social marginal disutility is sufficiently larger than ransom, the government combats drug trafficking, otherwise, there is no policy at all.
Surface functionalization of nanostructured Cu/Ag-deposited polypropylene fiber by magnetron sputtering
Authors: Chu Changliu , Hu Xuefeng , Yan Hongqin , Sun Yanyan 
Published: February 2021

Abstract
Metallic nanoparticles are widely used due to their superior electrical, antimicrobial, and electromagnetic shielding characteristics. In this work, the surface functionalization of polypropylene (PP) fibers using magnetron sputtering with pure Cu and Ag targets in the presence of Ar gas was systematically investigated, in detail, in terms of surface morphology, tensile, abrasion resistance, moisture regain, antibacterial, and electrostatic properties. The results indicated that the nanocomposite films deposited on the PP surface were even and dense under proper treatment conditions. Compared with pristine fiber, breaking tenacity, abrasion resistance, and antibacterial properties of the Cu/Ag-deposited PP fibers were significantly improved, whereas the extension at break and moisture regain decreased in different degrees. Also, the electrostatic property of treated PP fabrics was studied. This work reveals that surface functionalization of Cu/Ag-deposited PP fiber is versatile, and the surface treatment that uses metallic nanoparticles by magnetron sputtering is a promising approach for achieving multifunctional textiles.
Gold nanoparticles from Celastrus hindsii and HAuCl4: Green synthesis, characteristics, and their cytotoxic effects on HeLa cells
Authors: Mai Xuan-Truong , Tran Minh-Chien , Hoang Anh-Quan , Nguyen Phuc Dang-Ngoc , Nguyen Thi-Hiep , Tran Hai Nguyen , Nguyen Phuong-Tung 
Published: February 2021

Abstract
The extract from Celastrus hindsii (C. hindsii), a plant that naturally grows in the forests of several provinces of Vietnam, has been traditionally used as an alternative medicine for the treatment of inflammation because of its anticancer and antitumor properties. This study reported the green synthesis of stable gold nanoparticles (Au-NPs) derived from HAuCl4 using the extract of C. hindsii as reducing and capping agents. Their particle size could be controlled by adjusting the ratio of the extract to HAuCl4 solution used (1.25%, 2.5%, 3.75%, 5.0%, and 6.25%). The optimal ratio of the extract was 3.75% (Au-NPs-3.75%). The X-ray powder diffraction analysis demonstrated that the Au-NPs was successfully synthesized. Fourier-transform infrared spectroscopy result indicated the possible presence of phenolic acids and flavonoids (acting as reducing agents and potential natural antioxidants). Transmission electron microscopy images showed that the particle diameter of Au-NPs-3.75% varied between 13 and 53 nm (average: ∼30 nm) in its spherical shape. The biosynthesized Au-NPs-3.75% exhibited dose-dependent cytotoxicity against HeLa cells, and the inhibitory concentration (IC50) was 12.5 µg/mL at 48 h. Therefore, Au-NPs that were synthesized from environmentally friendly method without the presence of potentially toxic chemicals were highly possible in biomedical applications.
One-step preparation of metal-free phthalocyanine with controllable crystal form
Authors: Li Xiaolong , Feng Yuxi , Li Chenyang , Han Huahui , Hu Xueqing , Ma Yongning , Yang Yuhao 
Published: February 2021

Abstract
Metal-free phthalocyanine (H2Pc) has been widely used as photosensitive semiconductors in the organic optoelectronics field because of its unique planar molecular structure and high photocarriers’ generation efficiency. Herein, this paper related to a new facile and efficient one-step method for preparing specific crystal form of H2Pc with high crystallinity through ball-milling process, in which α-H2Pc can be prepared directly by dry ball-milling, and β-H2Pc and X-H2Pc can be simply obtained through wet ball-milling in butanone solvent at different temperatures. X-ray diffraction (XRD) was used to characterize the crystal stability of α-H2Pc, β-H2Pc, and X-H2Pc, which revealed that all the three crystalline H2Pc prepared had excellent crystal stability under different mechanical conditions.
Phase transformations during the oxidation of fayalite in iron-rich nickel slag
Authors: Du Xueyan , Ma Yongbo 
Published: February 2021

Abstract
Phase transformations during the oxidation of fayalite (Fe2SiO4) are investigated for the recovery of iron from iron-rich nickel slag by oxidation-magnetic separation. The proportions of various phases calculated by FactSage 7.1 show that augite and spinel are the major phases in the FeO-SiO2-MgO-CaO-O2 system in air atmosphere. The decreased content of Fe2+shows that Fe2SiO4 is gradually oxidized into Fe3O4 with increasing oxidation time. XRD patterns demonstrate that Fe3O4and Ca(Mg,Fe)Si2O6 are the dominant phases after the oxidation. The Mössbauer spectrum indicates that 93.1 wt.% of iron in oxidized nickel slag is in magnetic minerals, while a limited amount of iron is contained in non-magnetic minerals. Ca(Mg,Fe)Si2O6 was formed during the heating stage in Ar atmosphere through the polymerization of SiO4
4-and also via peritectic reaction after the isothermal oxidation.
Overburdened Gauls: the case of Florus and Sacrovir’s revolt of 21 CE
Authors: Kreiner Jared 
Published: February 2021

AbstractIn 21 CE, a series of localized movements broke out in Gallia Comata due to heavy debts among provincials according to Tacitus. Modern scholars have long argued that the indebtedness occurred because of rising interest rates, resulting from dwindling currency in circulation after decades of free-spending following Augustus’ victory at Actium, and that Gallic communities were subjected to an additional tribute to support the wars of Germanicus (14–16 CE), which continued unabated after the wars and pushed Gauls beyond their means. These claims are misguided, however, in that there is no certain evidence of a special tax to support Germanicus’ wars and that the argument for a dwindling circulation of currency in Gaul falters under closer inspection. Rather, the pressing statal and military needs imposed on communities in Gallia Comata after 9 CE on top of routine exactions could significantly increase burden levels levied on provincial populations, thus contributing to rising debts. Through examining how Roman logistics and conscription operated in this period, it is possible to trace how populations were impacted by such demands and which communities were most heavily affected by them, too. Individually, the impact of each factor is unlikely to have been burdensome enough to have caused large-scale resistance, it is only the cumulative effect that these explanations had on top of routine Roman extraction schemes that could create the conditions for this revolt. This paper argues that in extraordinary circumstances, such as the period after the Varian Disaster for Gallia Comata, the costs of supporting military campaigns places real short-term strains on local economies, which creates the conditions for revolt. The benefit of this approach is that it may explain other episodes of anti-fiscal resistance that broke out during or within a decade of wars in neighboring regions.