bluuebunny/crossref_metadata_2025_split huggingface dataset:
Commutators in special linear groups over certain division rings
Authors: Bien M. H. , Lam P. L. P. , Mai V. T. 
Published: April 2023

UDC 512.5
We consider the question whether an element of a special linear group of degree

m
≥
1

over a division ring

D

is a commutator. Our first aim is to show that if the division ring

D

is algebraically closed and finite-dimensional over its center, then every element of is a commutator of We also indicate that this question is related to the derived series in division rings and then describe the derived series in the Mal'cev–Neumann division rings of noncyclic free groups over fields.
Commutative ring extensions defined by perfect-like conditions
Authors: Alaoui Ismaili K. , Mahdou N. , Moutui M. A. S. 
Published: April 2023

UDC 512.5
In 2005, Enochs, Jenda, and López-Romos extended the notion of perfect rings to

n

-perfect rings such that a ring is

n

-perfect if every flat module has projective dimension less or equal than

n

. Later, Jhilal and Mahdou defined a commutative unital ring

R

to be strongly

n

-perfect if any

R

-module of flat dimension less or equal than

n

has a projective dimension less or equal than

n

. Recently Purkait defined a ring

R

to be

n

-semiperfect if

R
¯

=
R
/

R
a
d

(
R
)

is semisimple and

n

-potents lift modulo

R
a
d

(
R
)

.

We study of three classes of rings, namely,

n

-perfect, strongly

n

-perfect, and

n

-semiperfect rings. We investigate these notions in several ring-theoretic structures with an aim of construction of new original families of examples satisfying the indicated properties and subject to various ring-theoretic properties.
Results for retarded nonlinear integral inequalities with mixed powers and their applications to delay integro-differential equations
Authors: Shakoor А. , Samar M. , Athar T. , Saddique M. 
Published: April 2023

UDC 517.9
We present new retarded nonlinear integral inequalities with mixеd powers. The obtained inequalities can be used to study the boundedness and global existence of the solutions of integro-differential equation with delay and Volterra-type integral equation with delay. These inequalities extend some results available in the literature. Finally, we present two examples to demonstrate the usefulness of our main results.
Нерiвностi типу Маркова–Нiкольського в областях iз внутрiшнiми нульовими кутами в просторi Бергмана
Authors: Özkartepe P. 
Published: April 2023

УДК 517.5
Досліджується порядок зростання модуля довільного алгебраїчного полінома у ваговому просторі Бергмана

A
p

(
G
,
h
)

,

p
>
0
,

в областях, що мають зовнішні ненульові та внутрішні нульові кути у скінченному числі точок межі. Отримано оцінки типу Маркова–Нікольського для алгебраїчних поліномів, а також з'ясовано поведінку похідних поліномів у точках нулів і полюсів вагової функції в обмежених областях з кусково-гладкою межею.
AKTIVITAS EKSTRAK DAUN EBONI (Diospyros celebica Bakh.) TERHADAP PENYEMBUHAN LUKA DIABETIK TIKUS PUTIH YANG DIINDUKSI ALOKSAN
Authors: Ihwan  , Siti Anisa  , Akhmad Khumaidi  , Khildah Khaerati  
Published: April 2023

Luka diabetik merupakan luka yang disebabkan oleh infeksi akibat dari tingginya glukosa darah ? 200 mg/dL. Daun Diospyros celebica Bakh., memiliki potensi antibakteri, antidiabetes, antivirus, dan antijamur. Tujuan penelitian ini adalah menentukan aktivitas penyembuhan luka diabetik pada tikus putih yang di induksi aloksan dengan diberikan terapi ekstrak daun eboni. Induksi diabetes dilakukan menggunakan aloksan dosis 140 mg/kgBB intraperitonial. Tikus dilukai pada bagian punggung dengan diameter luka ± 1 cm dan kedalaman 2 mm. Jumlah sampel dalam penelitin ini adalah 25 ekor tikus dibagi menjadi 5 kelompok uji yaitu kelompok 1 diberikan suspensi glibenklamid secara oral dan gel plasebo pada luka, kelompok 2,3 dan 4, kelompok yang diberikan suspensi glibenklamid secara oral dan gel ekstrak daun eboni konsentrasi 5 %, 10 % dan 15 % pada luka), kelompok 5 (pemberian suspensi Na-CMC 0,5 % secara oral dan gel plasebo pada luka). Pengujian dilakukan selama sepuluh hari dengan dosis dua kali pemberian setiap hari. Pengamatan makroskopik, panjang luka diukur dan dilaporkan sebagai persentase penyembuhan luka. Hasil penelitian menunjukkan bahwa gel ekstrak daun eboni memiliki kemampuan untuk memperbaiki lesi pada luka diabetes pada tikus putih, konsentrasi gel ekstrak daun eboni yang paling efektif untuk memerbaiki lesi luka diabetik adalah konsentrasi 10%, dengan persentase penyembuhan 94,34%.
Kata Kunci : Diospyros celebica Bakh., Luka diabetik, Tikus putih
ҚАШЫҚТЫҚТАН ЗОНДТАУ ЖӘНЕ ГАЖ ТӘСІЛДЕРІН ҚАРАҒАЙЛЫ ОРМАННЫҢ ӨСІМДІК ЖАМЫЛҒЫСЫНЫҢ ҚАЛПЫНА КЕЛУ ПРОЦЕСІН ЗЕРТТЕУДЕ ҚОЛДАНУ («СЕМЕЙ ОРМАНЫ» МЕМЛЕКЕТТІК ОРМАН ТАБИҒИ РЕЗЕРВАТЫ МЫСАЛЫНДА)
Authors: Сагынбаева А.Б. , Мамбетов Б.Т. , Данчева А.В. 
Published: April 2023

Мақалада авторлар орман өрті болған аумақтағы өзгерістерді анықтауда, географиялық ақпараттық жүйелерді және қашықтықтан зондтау деректерін пайдалану қажеттілігін қарастырды. Өрт аймағындағы өзгерістерді анықтау үшін ENVI 5.2 және ArcGIS 10.8.1 бағдарламалары және Landsat 5, Landsat 7 Enhanced Thematic Mapper (ETM+), Landsat 8 OLI оптикалық спутниктерінің деректері қолданылған. Сонымен қатар, Жерді қашықтықтан зондтау (ЖҚЗ) әдістерінің көмегімен орман алқаптарының өрттен кейінгі өзгерістері сипатталған. Зерттеу аумағы Қазақстанның Абай облысы аумағында орналасқан «Семей орманы» мемлекеттік орман табиғи резерватының Жаңасемей филиалы болып табылады. 15 жыл уақыт ішіндегі, яғни 2007-2022 жылдар аралығында өрт болған аумақтардың өсімдік жамылғысының өзгерістері қарастырылды.
Зерттеу аймағы жоғары ажыратылымдықтағы Google Earth кескіндерінің негізінде цифрландырылды, содан кейін цифрланған карталар ArcGIS бағдарламалық құралының көмегімен пішін файлына түрлендірілді. Негізгі өңдеуден бұрын алынған кескін радиометриялық және атмосфералық түзетулерден тұратын алдын ала өңдеу сатысынан өтті. Алынған кескіннен өртті анықтау үшін dNBR = (NBRprefire – NBRpostfire) индексі қолданылды. Сондықтан, алдымен біз PreNBR индексін анықтаймыз, ол өрт шыққанға дейін түсірілген суреттерден есептелінеді. Зерттеу жағдайында бұл суреттер 25.03.2008 жылғы болып табылады. Суреттер бойынша барлық түзетулерді орындағаннан кейін PreNBR=(b4-b7)/(b4+b7), PostNbr=(b4-b7)/(b4+b7) есептелінді. Ол өрттен кейін түсірілген кескіндерге арналған. Зерттеу жағдайында бұл суреттер 20.05.2008 жылғы, соңында dNBR есептейміз. Алынған мәндер бойынша суреттерді жіктейміз. Осылайша, біз өрттің қай жерде пайда болғанын анықтаймыз.
Сонымен қатар, мақалада авторлар орман мониторингін нақтырақ және тиімдірек жүргізу үшін географиялық ақпараттық жүйелерді және қашықтан аудандастыру деректерін пайдалану қажеттілігін қарастырған.
PERJANJIAN EKSTRADISI PERSPEKTIF FIQIH SIYASAH
Authors: Fathanah Nurul , Akhsanuddin Akhsanuddin 
Published: April 2023

Perjanjian ekstradisi sekarang ini yang diadakan antar negara, disebabkan adalah karena semakin berkembangnya zaman. Sekarang ini orang berbuat tindak pidana tidak takut lagi untuk melaMaka dalam hal ini penulis akan mengkaji dari segi Fiqih Siyasah. Bagaimanakah pandangan dari Fiqih Siyasah mengenai perjanjian ekstradisi ini. Jadi dalam hal ini bagaimanakah konsep perjanjian ekstradisi sekarang ini menurut Fiqih Siyasah. Apakah sudah sesuai atau belum. Dan juga mengenai prinsip-prinsip umum dari perjanjian ekstradisi itu sendiri, sudah sesuai dengan Fiqih Siyasah atau belum. Dilihat dari contoh perjanjian ekstradisi dengan negara lain, yang akan dilihat materi, konsep dari perjanjian tersebut menurut Fiqih Siyasah. Dan juga perjanjian ekstradisi itu sendiri dari segi pengertian, konsep dan lain-lainnya, sudah sesuai dengan Fiqih Siyasah atau tidak. Bahwa ternyata dalam Fiqih Siyasah sendiri telah mengenal adanya perjanijian ekstradisi. Mengenai prinsip-prinsip umum yang ada banyak yang telah sesuai secara substansial. Ada ketidak sesuaian, yaitu mengenai negara-negara yang dapat melakukan perjanjian ekstradisi. Dalam Fiqih Siyasah negara yang dapat mengadakan perjanjian ekstradisi adalah negara-negara yang termasuk dalam negara Darus Salam, sedangkan yang termasuk dalam Darul Kuffar tidak dapat mengadakan perjanjian ekstradisi dengan negara yang termasuk dalam Darus Salam.Selain itu dapat disimpulkan ada hal-hal yang kurang sesuai dengan Fiqih Siyasah, yaitu mengenai pelaku tindak kejahatan, yang mana dalam Fiqih Siyasah itu diperjelas mengenai apakah orang tersebut muslim, atau dzimmi. Sementara dalam perjanjian ekstradisi pada umumnya tidak secara jelas menyebutkan tentang pelaku kejahatan apakah dia itu muslim atau dzimmi.
An Atlas of Color-selected Quiescent Galaxies at z > 3 in Public JWST Fields
Authors: Valentino Francesco , Brammer Gabriel , Gould Katriona M. L. , Kokorev Vasily , Fujimoto Seiji , Jespersen Christian Kragh , Vijayan Aswin P. , Weaver John R. , Ito Kei , Tanaka Masayuki , Ilbert Olivier , Magdis Georgios E. , Whitaker Katherine E. , Faisst Andreas L. , Gallazzi Anna , Gillman Steven , Giménez-Arteaga Clara , Gómez-Guijarro Carlos , Kubo Mariko , Heintz Kasper E. , Hirschmann Michaela , Oesch Pascal , Onodera Masato , Rizzo Francesca , Lee Minju , Strait Victoria , Toft Sune 
Published: April 2023

Abstract
We present the results of a systematic search for candidate quiescent galaxies in the distant universe in 11 JWST fields with publicly available observations collected during the first 3 months of operations and covering an effective sky area of ∼145 arcmin2. We homogeneously reduce the new JWST data and combine them with existing observations from the Hubble Space Telescope. We select a robust sample of ∼80 candidate quiescent and quenching galaxies at 3 < z < 5 using two methods: (1) based on their rest-frame UVJ colors, and (2) a novel quantitative approach based on Gaussian mixture modeling of the near-UV − U, U − V, and V − J rest-frame color space, which is more sensitive to recently quenched objects. We measure comoving number densities of massive (M
⋆ ≥ 1010.6
M
⊙) quiescent galaxies consistent with previous estimates relying on ground-based observations, after homogenizing the results in the literature with our mass and redshift intervals. However, we find significant field-to-field variations of the number densities up to a factor of 2–3, highlighting the effect of cosmic variance and suggesting the presence of overdensities of red quiescent galaxies at z > 3, as could be expected for highly clustered massive systems. Importantly, JWST enables the robust identification of quenching/quiescent galaxy candidates at lower masses and higher redshifts than before, challenging standard formation scenarios. All data products, including the literature compilation, are made publicly available.
Investigating the Effect of Solar Ambient and Data Characteristics on Ca ii K Observations and Line Profile Measurements
Authors: Murabito M. , Ermolli I. , Chatzistergos T. , Jafarzadeh S. , Giorgi F. , van der Voort L. Rouppe 
Published: April 2023

Abstract
We analyzed state-of-the-art observations of the solar atmosphere to investigate the dependence of the Ca ii K brightness of several solar features on spectral bandwidth and spatial resolution of the data. In particular, we study data obtained at the Swedish Solar Telescope with the Crisp Imaging Spectropolarimeter and Chromospheric Imaging Spectrometer instruments. The analyzed data, which are characterized by a spectral bandwidth of 0.12 Å and a spatial resolution of 0.″078, were acquired close to the disk center by targeting a quiet-Sun area and an active region. We convolved the original observations with Gaussian kernels to degrade their spectral bandwidth and spatial resolution to the instrumental characteristics of the most prominent series of Ca ii K observations available to date. We then studied the effect of data degradation on the observed regions and on parameters derived from Ca ii K line measurements that are largely employed as diagnostics of the solar and stellar chromospheres. We find that the effect of degrading the spectral resolution of Ca ii K observations and line profiles depends on both the employed bandwidth and observed solar region. Besides, we found that the spatial degradation impacts the data characterized by a broad bandwidth to a larger extent compared to those acquired with a narrow band. However, the appearance of the observed solar regions is only slightly affected by the spatial resolution of data with bandwidths up to 1 Å and in the range [3,10] Å. Finally, we derived relationships that can be used to intercalibrate results from observations taken with different instruments in diverse regions of the solar atmosphere.
Cell-Autonomous Constitutive gp130 Signaling in T Cells Amplifies TH17 Cell Responses and Causes Severe Lung Inflammation
Authors: Heinig Lisa Charlotte , Huth Emily Valentina Madelaine , Yan Karsten , Schumacher Neele , Nawrocki Mikolaj , Lory Niels Christian , Bradtke Peter , Bertram Tabea , Rattay Guido , Schmid Joanna , Huber Samuel , Wiech Thorsten , Schmidt-Arras Dirk , Rose-John Stefan , Mittrücker Hans-Willi 
Published: April 2023

Abstract
IL-6 plays a fundamental role in T cell differentiation and is strictly controlled by surface expression and shedding of IL-6R. IL-6 also acts on other cells that might affect T cell maturation. To study the impact of cell-autonomous and uncontrolled IL-6 signaling in T cells, we generated mice with a constitutively active IL-6R gp130 chain (Lgp130) expressed either in all T cells (Lgp130 × CD4Cre mice) or inducible in CD4+ T cells (Lgp130 × CD4CreERT2 mice). Lgp130 × CD4Cre mice accumulated activated T cells, including TH17 cells, in the lung, resulting in severe inflammation. Tamoxifen treatment of Lgp130 × CD4CreERT2 mice caused Lgp130 expression in 40–50% of CD4+ T cells, but mice developed lung disease only after several months. Lgp130+ CD4+ T cells were also enriched for TH17 cells; however, there was concomitant expansion of Lgp130− regulatory T cells, which likely restricted pathologic Lgp130+ T cells. In vitro, constitutive gp130 signaling in T cells enhanced but was not sufficient for TH17 cell differentiation. Augmented TH17 cell development of Lgp130+ T cells was also observed in Lgp130 × CD4CreERT2 mice infected with Staphylococcus aureus, but gp130 activation did not interfere with formation of TH1 cells against Listeria monocytogenes. Lgp130+ CD4+ T cells acquired a memory T cell phenotype and persisted in high numbers as a polyclonal T cell population in lymphoid and peripheral tissues, but we did not observe T cell lymphoma formation. In conclusion, cell-autonomous gp130 signaling alters T cell differentiation. Although gp130 signaling is not sufficient for TH17 cell differentiation, it still promotes accumulation of activated T cells in the lung that cause tissue inflammation.
Predictors of mortality and survival probability distribution among patients on tuberculosis treatment in Vihiga County, Kenya
Authors: Waliaula Wekunda Paul , S Omondi Aduda Dickens , Guyah Bernard , Odongo James 
Published: April 2023

Background: Tuberculosis (TB) related mortality remains a serious impediment in ending TB epidemic.
Objective: To estimate survival probability and identify predictors, causes and conditions contributing to mortality among TB patients in Vihiga County.
Methods: A cohort of 291 patients from 20 purposively selected health facilities were prospectively considered. Data was obtained by validated questionnaires through face-to-face interviews. Survival probabilities were estimated using Kaplan-Meier method while Cox proportional hazard model identified predictors of TB mortality through calculation of hazard ratios at 95% confidence intervals. Mortality audit data was qualitatively categorized to elicit causes and conditions contributing to mortality.
Results: 209 (72%) were male, median age was 40 (IQR=32-53) years while TB/HIV coinfection rate was 35%. Overall, 45 (15%) patients died, majority (78% (log rank<0.001)) during intensive phase. The overall mortality rate was 32.2 (95% CI 23.5 - 43.1) deaths per 1000 person months and six months’ survival probability was 0.838 (95% CI, 0.796-0.883). Mortality was higher (27%) among HIV positive than HIV negative (9%) TB patients. Independent predictors of mortality included; comorbidities (HR = 2.72, 95% CI,1.36–5.44, p< 0.005), severe illness (HR=5.06, 95% CI,1.59–16.1, p=0.006), HIV infection (HR=2.56, 95%CI,1.28–5.12, p=0.008) and smoking (HR=2.79, 95% CI,1.01–7.75, p=0.049). Independent predictors of mortality among HIV negative patients included; comorbidities (HR = 4.25, 95% CI; 1.15-15.7, p = 0.03) and being clinically diagnosed (HR = 4.8, 95% CI; 1.43-16, P = 0.01) while among HIV positive; they included smoking (HR = 4.05, 95% CI;1.03-16.0, P = 0.04), severe illness (HR = 5.84, 95% CI; 1.08-31.6, P = 0.04), severe malnutrition (HR = 4.56, 95% CI; 1.33-15.6, P = 0.01) and comorbidities (HR = 3.04, 95% CI; 1.03-8.97, p = 0.04). More than a half (52%) of mortality among HIV positive were ascribed to advancedHIV diseases while majority of (72%) of HIV negative patients died to TB related lung disease. Conditions contributing to mortality were largely patient and health system related.
Conclusion: Risk of TB mortality is high and is attributable to comorbidities, severe illness, HIV and smoking. Causes and conditions contributing to TB mortality are multifaceted but modifiable. Improving TB/HIV care could reduce mortality in this setting.
Keywords: TB mortality; survival distributions; treatment outcomes; Vihiga.
Investigation of antiviral substances in Covid 19 by Molecular Docking: In Silico Study
Authors: Oner Erkan , Demirhan Ilter , Miraloglu Meral , Yalin Serap , Belge Kurutas Ergul 
Published: April 2023

Aims: This paper aimed to investigate the antiviral drugs against Sars-Cov-2 main protease (MPro) using in silico methods.
Material and Method: A search was made for antiviral drugs in the PubChem database and antiviral drugs such as Bictegravir, Emtricitabine, Entecavir, Lamivudine, Tenofovir, Favipiravir, Hydroxychloroquine, Lopinavir, Oseltamavir, Remdevisir, Ribavirin, Ritonavir were included in our study. The protein structure of Sars-Cov-2 Mpro (PDB ID: 6LU7) was taken from the Protein Data Bank (www.rcsb. Org) system and included in our study. Molecular docking was performed using AutoDock/Vina, a computational docking program. Protein-ligand interactions were performed with the AutoDock Vina program. 3D visualizations were made with the Discovery Studio 2020 program. N3 inhibitor method was used for our validation.
Results: In the present study, bictegravir, remdevisir and lopinavir compounds in the Sars-Cov-2 Mpro structure showed higher binding affinity compared to the antiviral compounds N3 inhibitor, according to our molecular insertion results. However, the favipiravir, emtricitabine and lamuvidune compounds were detected very low binding affinity. Other antiviral compounds were found close binding affinity with the N3 inhibitor.
Conclusion: Bictegravir, remdevisir and lopinavir drugs showed very good results compared to the N3 inhibitor. Therefore, they could be inhibitory in the Sars Cov-2 Mpro target.
Keywords: Sars-CoV-2 Main Protease; Antiviral Drugs; Molecular Docking
Characteristics and outcomes of patients with pelvic organ prolapse: an analysis of data from Mulago National Referral Hospital from 2007–2016
Authors: Byamugisha Josaphat , Justus Barageine , Kakaire Othman , Haddy Nalubwama , Susan Obore , Korn Abner , Christopher Mukasa David , Haruna Mwanje , Godfrey Alia , Ayadi Alison El 
Published: April 2023

Introduction: Pelvic organ prolapse (POP) is associated with negative physical, social, psychological, and sexual experiences. There is paucity of data in low and middle income countries like Uganda. The purpose of this study was to describe clinical characteristics and outcomes of patients undergoing surgery for POP from 2007 to 2016.
Methods: The study was conducted at Mulago National Referral Hospital from 2014 to 2016. We conducted a retrospective review of the urogynecology surgical records using a standardized medical record abstraction form. Data of 222 POP patients were abstracted and managed using REDCap. Analysis was performed using Stata statistical software, v14.
Results: The mean participant age and parity was 57 years and 7 respectively. Ninety four percent of participants presented with a mass protruding from the vagina, 38% with uterine prolapse and 32% with cystocoele. Anaemia and hypertension were common comorbidities. Women underwent a variety of surgery types, and 35% experienced persistent pain post-operatively. At hospital discharge, 83% had achieved either complete resolution or improvement in their condition.
Conclusions: Measures encouraging presentation for care as soon as symptoms are experienced and reduction of total fertility rate will be beneficial. Patients with POP should be routinely screened for anaemia and hypertension.
Keywords: Pelvic organ prolapse; Mulago Hospital; Uganda.
A 10-year clinicopathological analysis of ovarian lesions in a tertiary hospital in Southern Nigeria
Authors: M Abasiattai Aniekan , C Nwafor Chukwuemeka , M Utuk Ntiense 
Published: April 2023

Background: Ovarian tumours are the most lethal of all gynaecological cancers and they are usually diagnosed in advanced stages when the `prognosis is very poor.
Objective: To determine the pattern of ovarian lesions, their frequency, presentation, and associated clinical symptoms in Uyo, Nigeria.
Methods: A 10-year retrospective study of all ovarian specimens that were surgically removed and histologically diagnosed.
Results: The patients were between the ages of 5 and 73 years with median age of 34.1 years. Benign tumours occurred most commonly among the 20–39-year age group (31.3%) while malignant tumours were predominant among those aged 50-69 years (10.0%). Surface epithelial tumours (45.4%) were the most common neoplastic tumours while the mature cystic teratoma (33.2%) was the most common tumour overall. Surface epithelial malignancies accounted for 70.6% of all ovarian malignancies and the serous cyst adenocarcinoma (10.2%) was the most common surface epithelial tumour as well as the most common malignant tumour.
Conclusion: There has been an increase in the number of malignant ovarian specimens in our centre. Though surface epithelial tumours were the most common category of ovarian tumours, overall, the mature cystic teratoma was the most common tumour. Serous cyst adenocarcinoma was the most common surface epithelial tumour and the most common malignant tumour.
Keywords: Ovary tumours; ovarian malignancy; malignant tumours; benign tumours; histopathology Uyo.