bluuebunny/crossref_metadata_2025_split huggingface dataset:
GIÁ TRỊ CỦA CẮT LỚP VI TÍNH XƯƠNG THÁI DƯƠNG TRONG ĐÁNH GIÁ MÀNG NHĨ Ở BỆNH NHÂN TAI XẸP NHĨ
Authors: Anh Tuấn Trần 
Published: June 2021

Mục tiêu: Mô tả đặc điểm hình ảnh và giá trị của cắt lớp vi tính xương thái dương trong đánh giá màng nhĩ trong tai xẹp nhĩ. Đối tượng và phương pháp: Nghiên cưú mô tả cắt ngang tình trạng màng nhĩ của 74 bệnh nhân xẹp nhĩ được chụp CLVT xương thái dương 64-128 dãy, tại bệnh viện Bạch Mai và bệnh viện Tai Mũi Họng Trung Ương từ tháng 12/2018 đến tháng 3/2020. Kết quả: Trong số 74 bệnh nhân nghiên cứu, đa số là xẹp nhĩ toàn bộ (82.4%), xẹp nhĩ độ III và độ IV chiếm ưu thế với tỉ lệ tương ứng là 33.8% và 60.8%. Tình trạng màng nhĩ trên CLVT bao gồm: chạm vào các cấu trúc tai giữa: ụ nhô 61/74 tai (82.4%), xương đe, khớp đe đạp 48/74 tai (64.9%), chạm cổ xương búa 18/74 tai (24.3%), chui vào xoang nhĩ, ngách mặt 10/74 tai (13.5%), 2 trường hợp không đánh giá được. Khi so sánh đối chiếu hình ảnh tổn thương màng nhĩ trên CLVT với tổn thương màng nhĩ trên phẫu thuật, chúng tôi thấy tỉ lệ chẩn đoán đúng của CLVT đối với sự thay đổi vị trí của màng nhĩ đạt từ 91.9% đến 97.3%, trong đó CLVT có độ chính xác cao nhất (97.3%) khi đánh giá hình thái màng nhĩ chạm ụ nhô. Kết luận: Có sự phù hợp giữa hình ảnh trên cắt lớp vi tính của màng nhĩ ở bệnh nhân tai xẹp nhĩ so với phẫu thuật.
KẾT QUẢ CHỨC NĂNG SAU CẮT ĐOẠN XƯƠNG MANG BƯỚU VÀ GHÉP CHỎM XƯƠNG MÁC TỰ THÂN KHÔNG CÓ CUỐNG MẠCH MÁU KÈM TÁI TẠO DÂY CHẰNG QUAY TRỤ DƯỚI TRONG ĐIỀU TRỊ BƯỚU ĐẠI BÀO ĐẦU DƯỚI XƯƠNG QUAY
Authors: Văn Hiến Nguyễn , Chí Dũng Lê , Thế Hòa Diệp , Long Vân Đoàn , Văn Thọ Lê 
Published: June 2021

Mục tiêu: Đánh giá kết quả chức năng và các biến chứng trong và sau khi phẫu thuật điều trị bướu đại bào đầu dưới xương quay (BĐBĐDXQ). Đối tượng và phương pháp nghiên cứu: nghiên cứu can thiệp không nhóm chứng với cỡ mẫu 50 bệnh nhân (≥18 tuổi) bị BĐBĐDXQ được phẫu thuật cắt đoạn xương mang bướu, ghép chỏm xương mác tự thân không có cuống mạch, kèm tái tạo dây chằng khớp quay trụ dưới (DCKQTD) bằng gân cơ gan tay dài tại Khoa Bệnh học Cơ Xương khớp, BV Chấn Thương Chỉnh hình TpHCM từ 1/2010-6/2020. Kết quả: Thời gian theo dõi sau phẫu thuật là 51,9 ± 27,9 tháng. Kết quả đo tầm độ khớp có trung bình gập là 25,90, duỗi là 49,70, nghiêng quay 12,80, nghiêng trụ 29,70 sấp 52,30, ngửa 68,40. Sức cầm nắm của tay bị bướu so với tay lành cùng bên có tỉ lệ trung bình là 70%, so với tay cùng bên không bệnh là 69,9%. Sau phẫu thuật các bệnh nhân đều có chức năng chi tốt và rất tốt chiếm tỉ lệ lần lượt là 82% và 16%. Tất cả bệnh nhân đều lành xương ghép với thời gian trung bình là 7,2 tháng và 100% đều không mất vững khớp gối ngoài, khớp quay cổ tay và khớp quay trụ dưới. Tuy nhiên, có 14% sau phẫu thuật có biến chứng gãy xương và 6% thoái hóa khớp độ 3. Kết luận: bệnh nhân sau điều trị BĐBĐDXQ có kết quả về chức năng tốt. Tuy nhiên, có một số trường hợp có biến chứng gãy xương và thoái hóa khớp sau phẫu thuật.
NGHIÊN CỨU TỶ LỆ MANG KHÁNG THỂ KHÁNG VIÊM GAN VI RÚT A VÀ E TRONG HUYẾT THANH CỦA NHÂN VIÊN HẬU CẦN TẠI BỆNH VIỆN TRUNG ƯƠNG QUÂN ĐỘI 108
Authors: Thị Tuấn Nguyễn , Thanh Sơn Lê , Thị Duyên Nguyễn , Thị Thắm Nguyễn 
Published: June 2021

Tiến hành nghiên cứu tỷ lệ mang kháng thể kháng vi rút viêm gan A (HAV) sau đây gọi là kháng thể viêm gan A và vi rút viêm gan E (HEV) trong huyết thanh ở nhân viên hậu cần đang làm việc tại Bệnh viện Trung ương quân đội 108 cho thấy: Tỷ lệ có anti-HAV IgG dương tính chung cho các nhóm đối tượng trên là 59,25%. Trong đó nhóm nhân viên nấu ăn 73,68%; Nhóm nhân viên lái xe là 50,0%; Nhóm nhân viên sửa chữa điện nước là 52,63%. Tỷ lệ có anti-HAV IgM dương tính chung cho nhóm đối tượng trên là 2,77%. Trong đó nhóm nhân viên nấu ăn 5,26%; Nhóm nhân viên lái xe là 3,12%; Nhóm nhân viên sửa chữa điện nước là 0%. Tỷ lệ có anti-HEV IgG dương tính chung cho nhóm đối tượng trên là 16,66%. Trong đó nhóm nhân viên nấu ăn 26,31%; Nhóm nhân viên lái xe là 18,75%; Nhóm nhân viên sửa chữa điện nước là 5,26%. Tỷ lệ có anti-HEV IgM dương tính chung cho nhóm đối tượng trên là 1,85%. Trong đó nhóm nhân viên nấu ăn 2,63%; Nhóm nhân viên lái xe là 0%; Nhóm nhân viên sửa chữa điện nước là 2,63%.
Knowledge, Perception and Exposure Risk to Passive Smoking Among In-School Adolescents in Ibadan Southeast Local Government Area Nigeria
Authors: F.D. Adediji , E.A. Adelere , J. Dangana 
Published: June 2021

Passive smoke contains more than 7,000 chemicals, including hundreds that are toxic and about 70 that can cause cancer. This is because the smoke that burns off the end of a cigar or cigarette contains more harmful substances (tar, carbon monoxide, nicotine, among others) than the smoke inhaled by the smoker. The study investigated the determinants knowledge, perception and exposure risk to passive smoking among in-school Adolescents in Ibadan Southeast Local Government Area, Nigeria.	The study adopted a cross-sectional survey design. Multi stage sampling techniques were used to select four hundred and ten participants (414) among in-school Adolescents in Ibadan Southeast Local Government Area, Nigeria. The instrument was a self-report questionnaire to collect data in the study and was subjected to validation. Obtained data was analyzed using descriptive statistics of frequency and percentages. Also, correlation analyses were used to test the hypothesis at 95% confidence level (α=0.05). Three research questions and two research hypotheses were tested in the study. The results showed that the mean age was 17.05±1.39 years. The result revealed that the majority of the participants 337(82.2%) had poor knowledge about passive smoking, while 73(17.8%) of the respondents had good knowledge about passive smoking. Also, the result revealed that the majority of the participants 165(40.2%) reported low exposure risk of passive smoking. Correlation analyses show that there is a significant relationship between adolescents’ knowledge and exposure risk to passive smoking among in-school adolescents in Ibadan southeast local government area (r=0.22; p=0.000). There is also a significant relationship between perception and exposure risk to passive smoking among in-school adolescents in Ibadan south east local government area (r=0.13; p=0.009). The study therefore concluded and recommended that training programmers’ should be provided to increase the adolescents’ awareness, change their perceptions, increase their ability to protect themselves and help to have a smoke-free environment.
GENERALIZED CLASS OF UNIVALENT FUNCTIONS WITH TWO FIXED POINTS
Authors: URALEGADDI B. A. , SOMANATHA C. 
Published: June 2021

Univalent functions of the form
\[ f(z)= a_1z-\sum_{n=2}^\infty a_nz^n\]
where $a_n \ge 0$, are dealt with. We examine the subclasses for which $(1 - \lambda)f(z_0)/z_0+\lambda f'(z_0) =1$ ($-1 <z_0 <1$). The coefficient inequali- ties and the extreme points of the classes that are starlike and convex of order o are determined. Many of the results of Silverman are obtained as particular cases.
Disharmonized the Regulation of Biological Resources and its Ecosystem in Indonesia
Authors: Simaremare Sumurung P. , Noho Muhammad Dzikirullah H. 
Published: June 2021

The goal of state control over natural resources is an anticipatory step to avoid the widest possible use by individuals or legal entities as a means of oppression and exploitation of others. However, in reality, many regulations overlap and are not in harmony with one another. The author of this study uses normative juridical research. The definition of normative juridical is a type of research that emphasizes more on library research, where the materials used will be obtained from laws, literature, mass media, which are related to writing materials. This study found that the arrangement of living natural resources in Indonesia that is less harmonious is: a. Law Number 21 of 2004 concerning Ratification of the Cartagena Protocol On Biosafety To The Convention On Biological Diversity and b. Constitutional Court Decision No.35/PUU-X/2012.
Keywords: Disharmonized, Regulation, Biological Natural Resources, Ecosystem, Indonesia.
Overcoming the Modern Socio-Cultural Crisis – from Postmodern to Post-Postmodern: Theoretical Aspects
Authors: Gumenyuk Tatyana , Palchynska Mariana , Herchanivska Polina , Kozak Yuriy , Kobyzhcha Nataliia 
Published: June 2021

The purpose of the article is to consider the negative aspects of postmodernism and study how post-post modernity can help humanity overcome the modern socio-cultural crisis. In their research, the authors used various scientific methods of cognition, such as analysis and synthesis, in particular meta-analysis and meta-synthesis, generalization, and induction.
The authors analyze the stages of development of civilization from the point of view of social progress, highlight their main characteristics and typological differences. The considered key points characteristic of postmodern, such as pluralism, negativism, relativism, denial of binarity in thinking, the extreme degree of nihilism, etc., lead to the understanding that the crisis that arose in the political, economic, socio-cultural life of society, at the turn of 20 21 centuries, inherent in the very nature of postmodern. The values ​​and perception of the postmodern are less and less consistent with the present time, and in its depths, a new worldview begins to crystallize, conventionally called post-postmodern, as a response to overcoming the current socio-cultural crisis. Post-postmodern, postmodern, like modern before them and similar phenomena are links of one chain, interconnected with each other and logically following from the processes of previous eras. The main components of the post-postmodern, which are formed from the problems of the postmodern, are highlighted and characterized.
As a result, the study showed that the currently being formed new worldview - post-postmodernity came close to the search for a new spirituality for the all-round development of a person and turning him into a socially mature being, as well as for resolving the internal contradictions of the postmodern worldview.
Rapport fra befaring og registrering på Fella, Vatnan og Gåshopen i Hammerfest kommune, Finnmark fylke 2019
Authors: Damm Charlotte , Skandfer Marianne , Vollan Kenneth Webb Berg 
Published: June 2021

I forbindelse med forskningsprosjektet Stone Age Demographics ble det i 2019 foretatt befaring og registrering på tre steder i Sørøysund i Vestfinnmark: Fella, Vatnan og Gåshopen. To av områdene var fra tidligere kjent som rike på kulturminner, mens det bare var få registrert på det siste området. Det viste seg at alle 3 områder markerer seg med særdeles mange kulturminner fra steinalderen.
I denne rapporten presenteres samtlige av disse kulturminner og det redegjøres både for tidligere beskrivelser og undersøkelser samt for hvordan strukturer og landskap fremstår i dag.
Room‐Temperature Symmetric Giant Positive and Negative Electrocaloric Effect in PbMg0.5W0.5O3 Antiferroelectric Ceramic
Authors: Li Junjie , Wu Hong‐Hui , Li Jianting , Su Xiaopo , Yin Ruowei , Qin Shiqiang , Guo Dong , Su Yanjing , Qiao Lijie , Lookman Turab , Bai Yang 
Published: June 2021

AbstractAs an emerging solid‐state refrigeration technology with zero‐emission and high energy conversion efficiency, there is a compelling need for ferroelectric materials with giant electrocaloric effects (ECEs) at room temperature suitable for refrigeration applications. The complex perovskite antiferroelectric (AFE), PbMg0.5W0.5O3, containing non‐equivalent B‐site ions with a symmetric giant positive and negative ECE near room temperature is presented. At the Curie temperature of 36 °C, the first‐order AFE–paraelectric phase transition gives rise to a large enthalpy change of 3.92 J g−1, more than four times that of BaTiO3. This leads to a significant ECE under the influence of an electric field. The direct electrocaloric characterization shows that the adiabatic temperature change, ΔT, exhibits symmetric peaks with a giant positive maximum of 1.79 K (ΔS = 1.68 J kg−1 K−1) at 36 °C and a negative maximum of −2.02 K (ΔS = −1.93 J kg−1 K−1) at 34 °C. The ultrahigh magnitude of ΔT near room temperature makes PbMg0.5W0.5O3 a superior electrocaloric material far beyond traditional PbZrO3‐based AFEs. The coexistence of symmetric giant positive and negative ΔT to further improve cooling efficiency is expected. In addition, the good reversibility and negligible leakage current should pave the way for practical applications.
Tailored Local Bandgap Modulation as a Strategy to Maximize Luminescence Yields in Mixed‐Halide Perovskites
Authors: Feldmann Sascha , Neumann Timo , Ciesielski Richard , Friend Richard H. , Hartschuh Achim , Deschler Felix 
Published: June 2021

AbstractHalide perovskites have emerged as high‐performance semiconductors for efficient optoelectronic devices, not least because of their bandgap tunability using mixtures of different halide ions. Here, temperature‐dependent photoluminescence microscopy with computational modelling is combined to quantify the impact of local bandgap variations from disordered halide distributions on the global photoluminescence yield in mixed‐halide perovskite films. It is found that fabrication temperature, surface energy, and charge recombination constants are keys for describing local bandgap variations and charge carrier funneling processes that control the photoluminescence quantum efficiency. It is reported that further luminescence efficiency gains are possible through tailored bandgap modulation, even for materials that have already demonstrated high luminescence yields. The work provides a novel strategy and fabrication guidelines for further improvement of halide perovskite performance in light‐emitting and photovoltaic applications.
Arothron: An R package for geometric morphometric methods and virtual anthropology applications
Authors: Antonio Profico , Costantino Buzi , Silvia Castiglione , Marina Melchionna , Paolo Piras , Alessio Veneziano , Pasquale Raia 
Published: June 2021

AbstractObjectivesThe statistical analysis of fossil remains is essential to understand the evolution of the genus Homo. Unfortunately, the human fossil record is straight away scarce and plagued with severe loss of information caused by taphonomic processes. The recently developed field of Virtual Anthropology helps to ameliorate this situation by using digital techniques to restore damaged and incomplete fossils.Materials and methodsWe present the package Arothron, an R software suite meant to process and analyze digital models of skeletal elements. Arothron includes tools to digitally extract virtual cavities such as cranial endocasts, to statistically align disarticulated or broken bony elements, and to visualize local variations between surface meshes and landmark configurations.ResultsWe describe the main functionalities of Arothron and illustrate their usage through reproducible case studies. We describe a tool for segmentation of skeletal cavities by showing its application on a malleus bone, a Neanderthal tooth, and a modern human cranium, reproducing their shape and calculating their volume. We illustrate how to digitally align a disarticulated model of a modern human cranium, and how to combine piecemeal shape information on individual specimens into one. In addition, we present useful visualization tools by comparing the morphological differences between the right hemisphere of the Neanderthal and the modern human brain.ConclusionsThe Arothron R package is designed to study digital models of fossil specimens. By using Arothron, scientists can handle digital models with ease, investigate the inner morphology of 3D skeletal models, gain a full representation of the original shapes of damaged specimens, and compare shapes across specimens.
Hydrodynamic and electrical interactions in electrospinning of polymer fibers over a liquid collector
Authors: Li Shichen , Lee Bong‐Kee 
Published: June 2021

AbstractThis paper reports the morphology manipulation of electrospun polymer fibers using a rotating water collector. The hydrodynamic and electrical interactions of the employed liquid collector and electrospun fibers are investigated to reveal their effects on the fiber morphology. The experimental results show that hydrodynamic interaction is the dominant factor. Particularly, a higher flow velocity of the liquid collector produces a fiber mat with a larger area and lower density consisting of electrospun fibers with a smaller diameter and higher degree of alignment. By applying a rotation speed of 600 rpm, a fiber mat area can be increased by ~166% compared with the stationary solid collector while an area fraction is reduced to 45.2%. Furthermore, it is found that the electrical interaction only affects the area and density of the fiber mat. The higher electrical conductivity of the liquid collector leads to a smaller fiber mat area with higher fiber density. The present study offers a new paradigm for precisely manipulating the morphology of electrospun polymer fibers, thus leading to a broad range of applications.
Synthesis of Ultrathin and Grid‐Structural Carbon Nanosheets Coupled with Mo2C for Electrocatalytic Hydrogen Production
Authors: Du Qianqian , Zhao Ruihua , Chen Xiaojun , Liu Lu , Zhang Shaoyang , Guo Tianyu , Du Jianping , Li Jinping 
Published: June 2021

AbstractMolybdenum carbide possessing a Pt‐like d‐band electronic structure is considered as one of potential candidates of electrocatalysts and it shows intrinsic catalytic property. However, a high carbonizing temperature easily leads to the coalescence of nanoparticles (NPs). Here, we propose a simple sol‐gel route to achieve high dispersity of carbide NPs by designing a Mo‐involved xerogel. The results show that molybdenum carbide NPs are dispersed and anchored on the nitrogen‐doped carbon nanosheets (Mo2C@NC). Ultrathin carbon layers resemble graphene and the network structures act as a support of carbide NPs, which can hinder NPs’ coalescence effectively. Nanpoparticles cross‐coupled on network‐structure nanosheets display the grid shapes. Electrochemical studies indicate that Mo2C@NC material exhibits outstanding hydrogen evolution performance in alkaline electrolyte.
Population pharmacokinetics of oral levofloxacin in healthy volunteers and dosing optimization for multidrug‐resistant tuberculosis therapy
Authors: Boonpeng Apinya , Jaruratanasirikul Sutep , Wattanavijitkul Thitima , Nawakitrangsan Monchana , Samaeng Maseetoh 
Published: June 2021

AbstractLevofloxacin is considered a key component of a multidrug‐resistant tuberculosis (MDR‐TB) regimen. However, there is considerable concern regarding the subtherapeutic concentrations of the currently used doses and the development of drug resistance. Therefore, this study aimed to describe the population pharmacokinetics (PPK) of oral levofloxacin in healthy volunteers and to evaluate the probability of target attainment (PTA) in an attempt to optimize the dosing regimens for MDR‐TB therapy. Data of levofloxacin in healthy volunteers from a previous study were used to construct a PPK model. Monte Carlo simulations were performed to derive the PTAs of various regimens. A two‐compartment model with linear elimination and transit absorption compartments best described the pharmacokinetics (PK) of levofloxacin. The estimated PK parameters (interindividual variability, %) were: apparent clearance 8.32 L h−1 (22.6%), apparent central volume of distribution 35.8 L (45.2%), apparent peripheral volume of distribution 39.7 L, intercompartmental clearance 40.6 L h−1 (43.8%), absorption rate constant 7.45 h−1 (150%), mean absorption transit time 0.355 h (52.4%), and total number of transit compartments 6.01 (131.9%). Monte Carlo simulations using levofloxacin 750–1000 mg yielded a probability of achieving a target free area under the concentration–time curve/minimum inhibitory concentration (MIC) of 100 at greater than 90% for Mycobacterium tuberculosis with an MIC < 0.5 mg L−1, while a dose of 1500 mg was required for strains with an MIC of 1 mg L−1. A higher dose of levofloxacin might be needed to treat tuberculosis. However, further studies on the efficacy and safety of this dose are needed to confirm our findings.
Quantitation of six steroid hormones by ultra‐performance liquid chromatography–tandem mass spectrometry in plasma and prefrontal cortex samples from rats with chronic unpredictable mild stress‐induced depression
Authors: Zhu Ying , Han Xuemei , Li Xixuan , Qin Yanjie , Rang Ying , Zhai Xuejia , Lu Yongning 
Published: June 2021

AbstractSteroid hormones such as glucocorticoids and their metabolites are closely related to mental diseases and neuroendocrine diseases. Quantitative analysis of these substances will help in understanding their roles in related research fields. In this study, an ultra‐performance liquid chromatography–tandem mass spectrometry (UPLC–MS/MS) method was developed to detect the concentration of corticosterone (CORT) and its metabolites, progesterone (PROG) and testosterone in rat plasma and prefrontal cortex (PFC), and was applied to investigate the changes in hormones in rats with depression induced by chronic unpredictable mild stress (CUMS). The method was shown to be linear in the quantitation range for all analytes. Intra‐ and inter‐day accuracy and precision were between 80% and 120%. Furthermore, we found that the level of CORT in plasma and PFC increased, whereas that of 11‐dehydrocorticosterone (11‐DHCORT) as well as the ratio of 11‐DHCORT and CORT declined in rats with CUMS‐induced depression. The trends of these changes in central PFC and peripheral plasma were consistent. In conclusion, this study successfully established an UPLC–MS/MS method for simultaneous measurement of CORT and its metabolites, PROG and testosterone in rat plasma and PFC, and applied it to rats with depression. The method could be further applied to the research of depression and diseases related to these steroid hormones.