bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geochemistry and boron isotope compositions of tourmalines from the granite-greisen-quartz vein system in Dayishan pluton, Southern China: Implications for potential mineralization
Authors: Zhao Zhuang , Yang Xiaoyong , Lu Youyue , Zhang Zunzun , Chen Shanshan , Sun Chao , Hou Qi , Wang Yu , Li Shuang 
Published: February 2021

Abstract
Tourmaline occurs widely within Dayishan ore field, Nanling Range, and is associated with magmatic-hydrothermal rare metal mineralization. Four types of tourmaline are recognized: (1) tour-maline in coarse-grained monzogranite (Tur-G1); (2) tourmaline in medium–fine-grained monzogranite (Tur-G2); (3) tourmaline aggregates associated with muscovite in greisen (Tur-Gr), showing a yellow core (Tur-Gry) and blue rim (Tur-Grb); and (4) quartz-vein-hosted tourmaline (Tur-V). In this study, we performed systematic investigations of in situ boron isotopic and elemental compositions of tour-malines in different granite, greisen, and quartz veins by EPMA and LA-MC-ICP-MS. Results show that almost all tourmalines exhibit schorl compositional affinity with extremely low Ca contents, high Fe/(Fe+Mg), and the calculated X-site occupancies in tourmalines show their affinities to the alkali group. Substitution processes of major element variations are dominantly caused by MgFe−1, FeAl−1, (Ca,Mg)(☐–1,Al–2), and R(Na,Mg)–1 exchange vectors. Based on geochemistry and petrology, Tur-G1, Tur-G2, and Tur-Gry precipitated from a boron-rich melt, while Tur-Grb and Tur-V crystallized from hydrothermal fluid. Many trace element concentrations overlap and most are &lt;10 ppm. The significantly higher contents of Sn and Zn and positive Eu anomaly reflect the influence of an external fluid. Magmatic tourmalines fall into a narrow range of δ11B values between –15.58 and –14.09‰, indicating a single boron source of the granitic magma. Hydrothermal tourmalines display slightly lighter B isotopic compositions (–16.31 to –14.91‰), which are consistent with precipitation from externally derived fluids with lighter boron. Based on the isotopic and chemical compositional evidence, Sn and Zn may come from the host rock rather than granite.
Numerical study of flow characteristics around rectangular cylinders in tandem
Authors: Hossain Md Mosharrof , Nayeem Muhammed Hasnain Kabir , Ali Md Abu Taher 
Published: February 2021

The phenomena of mean pressure distribution around two square cylinders in tandem has been carried out. Also the mean velocity distribution in the wake of the two cylinder are studies. The Navier-Stokes equation for conservation of momentum and the continuity equation for conservation of mass are used to study the pressure and velocity distribution for various longitudinal spacing of the cylinder. The turbulent k-ω stationary flow at a high Reynolds number of Re= 6.5e4 is used to simulate single-phase flow. A critical longitudinal spacing equal to four times the side dimension of the square cylinder (L/D= 4) is investigated. Beyond that critical spacing both the cylinders are subjected to drag force. When L/D < 4 only the downstream cylinder is subjected to negative drag. Also, the form of the streamline profile behind upstream cylinder is different from that of single cylinder. However, beyond L/D= 4 the nature of the pressure behind both of the cylinder becomes kind of like that of the single cylinder.
Spatial distribution, source identification, and health risk assessment of fluoride in the drinking groundwater in the Sulin coal district, northern Anhui Province, China
Authors: Hao Chunming , Liu Min , Zhang Wei , He Peiyong , Lin Dongjian , Gui Herong 
Published: February 2021

Abstract
Previously, systematic studies of distribution, sources, and health risks of high F− groundwater used as a drinking-water source in the Sulin coal district, northern Anhui Province of China have not been carried out. In this study, 30 groundwater samples were collected in May 2019, and the data were analyzed using geographic information system, factor analysis, positive matrix factorization, and risk-based corrective action models. The results indicated that the F− concentration of the groundwater samples ranged from 0.16 to 2.06 mg/L, with a mean value of 1.10 mg/L. The F− concentrations of 53.33% of the groundwater samples exceeded China's maximum permissible limit for drinking water (1.00 mg/L). Quantificational source apportionment revealed that the weathering of F-bearing minerals is the main source (66.20%). Cation exchange (16.30%), agricultural activities (13.20%), and natural geological processes (4.30%) were the other sources of F−. The percentages of infants, children, teens, male adults, and female adults that face health risks due to excess F− intake were approximately 20.00%, 70.00%, 6.67%, 20.00%, and 10.00%, respectively. This research provided useful insights into the proper management of groundwater extraction to mitigate health problems associated with excessive F− intake.
Bioremediation of various aromatic and emerging pollutants by Bacillus cereus sp. isolated from petroleum sludge
Authors: Alhefeiti Manal Ali , Athamneh Khawlah , Vijayan Ranjit , Ashraf Syed Salman 
Published: February 2021

Abstract
The accumulation of toxic chemical constituents in sludge and wastewater has fuelled an interest in investigating efficient and eco-friendly wastewater remediation approaches. In this study, a set of bacterial samples were isolated from petroleum sludge and tested for their ability to degrade different aromatic pollutants, including azo dyes and emerging pollutants. Although exhibiting differential specificity, all bacterial isolates were able to degrade different classes of aromatic dyes efficiently. Ribosomal 16S rRNA sequencing of the 12 bacterial isolates showed that they belonged to two different bacterial genera: Bacillus cereus and Pseudomonas guariconensis. Of these 12 strains, MA1 (B. cereus) was the most promising and was chosen for further optimization and biochemical studies. The optimum culture and remediation conditions for MA1 was found to be at pH 7, with 100 ppm dye concentration, and under aerobic condition. In addition to efficiently degrading various aromatic dyes (e.g. Congo Red, Reactive Black 5, PBS, and Toluidine Blue), MA1 was also found to be capable of degrading various emerging pollutants (e.g. prometryn, fluometuron and sulfamethoxazole). Preliminary transcriptome analysis shows that MA1 grown on media containing a mixture of aromatic dyes appears to differentially express a number of genes. Data shown here strongly suggests that petroleum sludge is a rich reservoir of bacteria with powerful remediation abilities.
Development of Secondary Osteoporosis in Teenage Girls with Menstrual
Disorders
Authors: Kaliberdenko Vitalii B. , Nehuliaieva Lilia 
Published: February 2021

:
Letter to the editor on research article entitled “Development of Secondary Osteoporosis in
Teenage Girls with Menstrual Disorders” by Popova-Petrosyan E.V, Shanmugaraj Kulanthaivel and
Keerthanaa Balasundaram which was published in CWHR. Nowadays we have more research and
review papers available on osteoporosis in post menopausal women, however we are still lacking on
researches for osteoporosis in teenage girls in our current literature.
Authors did a wonderful research work in the field of Obstetrics and Gynecology. This research
paper has significant and appreciable scope in the field of pediatrics and pediatric gynecology as
well. It is really interesting and exciting, because there is no research paper published on
osteoporosis in teenage girls due to menstrual disorders such as oligomenorrhea, secondary amenorrhea and polymenorrhea. As osteoporosis is one of the emerging medical and socioeconomic
threat we need more researches similar to this, in order to improve the women health in future.
Hereby we would like to appreciate the work of authors on their significant and interesting
research paper. Further we are eagerly expecting more researches like this from “Current Women`s
Health Reviews”.
In Vivo Anti-Candida Activity of Artemisia herba alba asso and Citrus aurantium Extracts Formulated in Different Ointments
Authors: Boukhennoufa Asma , Louiza Mansar-Ben Hamza , Aicha Tir Touil Meddah , Boumediene Meddah 
Published: February 2021

Introduction:
Today, people around the world have resorted to herbal medicine, due to
the increase in antibiotic resistance and the side effects of synthetic drugs.

Methods:
Our research focused on the in vivo antifungal activity of three ointments formulated on
the basis of methanolic extract of Citrus aurantium peel, ethanolic extract of the aerial part of
Artemisia herba alba asso, and essential oil of Artemisia herba alba asso. Wistar rats were made
immunosuppressed by Dexamethazone and Tetracycline. Three strains of Candida albicans, S1, S2
and S3 were inoculated. The fungal load of the area tested, the weight of the rats, as well as the
macroscopic and microscopic appearance of the skins, were determined.

Results:
Cutaneous candidiasis was manifested as red, thick, scabbed lesions, mostly located on
the infected area of t he animals. Microscopic observation of histological skin sections of animals infected
and treated with the ointments, P1, P2 and P3 showed a well-preserved architecture of the
skin. Erythema, edema, ulceration, erosion were seen in the skin of animals receiving placebo or
Nystatin. The P3 ointment exerted a very powerful antifungal effect against especially the strain S1
compared to the other ointments (log 3.07±0.006 CFU/ml). The weight was regained significantly
in the groups of animals receiving the ointments, and regression of growth was observed in the untreated
animals and those treated by Nystatin and placebo.

Conclusion:
The EAH and MCP ointment and the essential oil of Artemisia developed, allowed to
retain their significant antifungal activity against Candida.
Photocatalytic Degradation of 2-propanol Over TiO2-based Thin Films in a Simulated Pilot Microreactor
Authors: Garlisi Corrado , Yusuf Ahmed , Palmisano Giovanni 
Published: February 2021

Background:
Microreactor devices have attracted increasing attention over the last years
due to their high surface-to-volume ratio, which ensures a high heat and mass transfer, short molecular
diffusion distance and greater spatial illumination homogeneity compared to the traditional reactors.

Objective:
The aim of this study was to model the kinetics of photo-degradation of 2-propanol over
TiO2-based thin films in a gas-phase batch-reactor and simulate their performance in a microreactor
device.

Methods:
The reaction was carried out in a gas-phase batch-reactor, assessing the reactivity of singlelayer
nitrogen (N)-doped TiO2 and a bilayer consisting of N-doped TiO2 as a bottom layer and copper
(Cu)-doped TiO2 as a top layer. The kinetics of the photocatalytic process was modelled by Langmuir–
Hinshelwood (LH) model. The constants obtained from the LH model were used to simulate the
performance of the photocatalysts in a microreactor, operating in a continuous flow mode and investigating
the effect of the volumetric flow rate (Q), initial concentration of pollutant (Co), number of microchannels
(n) and microchannel length (l) on the photo-degradation of 2-propanol.

Results:
N-Cu-TiO2 exhibited a higher reactivity but a lower adsorption ability towards the target pollutant
compared to N-TiO2. To maximize and leverage the advantages of a microreactor, optimal operating
conditions for a continuous flow mode, at a steady-state, should be moderately low Q and Co,
long l and n that minimizes flow maldistribution in parallel.

Conclusion:
The findings in this work could serve as a basis to design and fabricate efficient microreactors
for the removal of VOC in air purification applications.
Patients with Protein-Truncating PKD1 Mutations and Mild ADPKD
Authors: Lanktree Matthew B. , Guiard Elsa , Akbari Pedram , Pourafkari Marina , Iliuta Ioan-Andrei , Ahmed Syed , Haghighi Amirreza , He Ning , Song Xuewen , Paterson Andrew D. , Khalili Korosh , Pei York P.C. 
Published: February 2021

Background and objectives
Progression of autosomal dominant polycystic kidney disease (ADPKD) is highly variable. On average, protein-truncating PKD1 mutations are associated with the most severe kidney disease among all mutation classes. Here, we report that patients with protein-truncating PKD1 mutations may also have mild kidney disease, a finding not previously well recognized.

Design, setting, participants, & measurements
From the extended Toronto Genetic Epidemiologic Study of Polycystic Kidney Disease, 487 patients had PKD1 and PKD2 sequencing and typical ADPKD imaging patterns by magnetic resonance imaging or computed tomography. Mayo Clinic Imaging Classification on the basis of age- and height-adjusted total kidney volume was used to assess their cystic disease severity; classes 1A or 1B were used as a proxy to define mild disease. Multivariable linear regression was performed to test the effects of age, sex, and mutation classes on log-transformed height-adjusted total kidney volume and eGFR.

Results
Among 174 study patients with typical imaging patterns and protein-truncating PKD1 mutations, 32 (18%) were found to have mild disease on the basis of imaging results (i.e., Mayo Clinic Imaging class 1A–1B), with their mutations spanning the entire gene. By multivariable analyses of age, sex, and mutation class, they displayed mild disease similar to patients with PKD2 mutations and Mayo Clinic Imaging class 1A–1B. Most of these mildly affected patients with protein-truncating PKD1 mutations reported a positive family history of ADPKD in preceding generations and displayed significant intrafamilial disease variability.

Conclusions
Despite having the most severe mutation class, 18% of patients with protein-truncating PKD1 mutations had mild disease on the basis of clinical and imaging assessment.

Podcast
This article contains a podcast at https://www.asn-online.org/media/podcast/CJASN/2021_02_18_CJN11100720_final.mp3
Kesepian dan Problematic Internet Use pada Mahasiswa
Authors: Rinaldi Martaria Rizky 
Published: February 2021

Penelitian ini bertujuan untuk mengetahui hubungan antara kesepian dengan problematic internet use pada mahasiswa. Hipotesis dalam penelitian ini yaitu terhadap hubungan positif antara kesepian dengan problematic internet use pada mahasiswa. Subjek penelitian ini berjumlah 120 mahasiswa. Pengambilan subjek penelitian menggunakan sampling purposive dengan pengumpulan data menggunakan Skala Problematic Internet Use dan Skala Kesepian. Data dianalisis menggunakan korelasi product moment dengan program SPSS. Berdasarkan hasil analisis, diperoleh nilai korelasi (rxy) sebesar 0,721 dan p = 0,000 (p < 0,01). Hasil tersebut menunjukan bahwa terdapat hubungan positif antara kesepian dengan problematic internet use pada mahasiswa. Hasil tersebut menunjukkan bahwa hipotesis diterima, artinya semakin tinggi kesepian pada mahasiswa maka semakin tinggi pula problematic internet use pada mahasiswa dan sebaliknya, semakin rendah kesepian pada mahasiswa maka semakin rendah pula problematic internet use pada mahasiswa. Koefisien determinasi (R2) = 0,52, hal ini menunjukkan bahwa kesepian memiliki kontribusi sebesar 52 % terhadap problematic internet use.
Validitas dan Reliabilitas Skala Student Engagement
Authors: Junianto Mahmud , Bashori Khoiruddin , Hidayah Nurul 
Published: February 2021

Research on student engagement has been incrase in recent years. Therefore, to determine the high or low level of student engagement, a valid and reliable measuring instrument is required. This means that the measuring instrument of student engagement must measure only the construct of student engagement reliably and consistently in measurement. The purpose of this research was to test the validity and reliability of the student engagement construct based on Fredrick et al theory. The components of student engagement that are used as a reference for making measuring instruments consist of behavioral engagement, emotional engagement, and cognitive behavior. The study was conducted on 100 high school students using a proportional sampling technique. The measuring instrument is constructed using a semantic differential scaling model. The validity and reliability test used the confirmatory factor analysis (CFA) approach with the help of PLS 3.2.9 software. The results showed that the student attachment measurement tool was declared valid and reliable to be used as a measuring tool. The convergent and discriminant validity tests have met the standards, with loading factor score value of P> 0.5, while the Cronbach alpha reliability score is 0.753 and the composite reliability is 0.835. This measuring instrument is also declared fit with an RSMR value of 0.033. 7 items dropped out of the 18 items tested. Keywords :Student Engagement, Validity,Reliability, Measurement
The effect of Planned Behavior Theory on Corruption Intention Intracampus Organization
Authors: Dian Nur Ema Zaka 
Published: February 2021

This study aim to determine the effect of Planned Behavior Theory and it’s components on the corruption intention of intracampus organization administrators. The research subject were 111 administrator at Padang State University. The research design used is quantitative associative type with purposive sampling technique. The research used a corruption intention scale and Theory of Planned Behavior scale. The result found that there was a significant positive effect between Theory of Planned Behavior (TPB) and the intention of corruption in intracampus organization administrators with R2= 0,454 or 45,4% effective contribution. The TPB components that have the most influence on corruption intentions are in order of attitude towards behavior, subjective norm, and perceive behavior control. There were no differences in corruption intention, both in terms of gender and frequency of joining organizations. This research can be used to consider the procurement of anti-corruption education courses in universities and student organizations can add a measure of TPB and corruption intention for recruitment of new members.
PENGARUH COVID-19 TERHADAP KONDISI SOSIAL BUDAYA DI KOTA MALANG DAN KONSEP STRATEGIS DALAM PENANGANANNYA
Authors: Yanuarita Heylen Amildha , Haryati Sri 
Published: February 2021

Penelitian ini bertujuan untuk menganalisis bagaimana penyebaran virus corona di Kota Malang dan bagaimana dampaknya terhadap kondisi sosial budaya serta mencari tahu langkah strategis dalam upaya penanganan. Adapun metode penelitian yang digunakan yakni metode studi kuantitatif deskriptif dibantu dengan tinjauan studi literatur sederhana yang sesuai dengan materi atau pembahasan penelitian. Populasi dari penelitian adalah seluruh masyarakat Kota Malang dengan penentuan sampel menggunakan teknik purposive sampling kepada pemerintah daerah Kota Malang, pihak yang bertugas di bidang kesehatan di Kota Malang, dan masyarakat sekitar yang ada di Kota Malang. Berdasarkan hasil penelitian, ditemukan bahwa penyebaran COVID-19 di Kota Malang terus mengalami kenaikan dan memberikan dampak sosial budaya ke arah negatif, khususnya setelah diberlakukannya Pembatasan Sosial Berskala Besar (PSBB). Dari mulai tingkat perceraian tinggi, interaksi sosial terbatas, hingga pengaruh sosial pada perempuan dan anak-anak. Maka dari itu, perlu diberlakukan langkah strategis dengan penggunaan demografi sosial berdasarkan penurunan mobilitas sosial masyarakat di Kota Malang.Kata kunci: Dampak Covid-19, sosial budaya, strategi
FAKTOR PENDORONG DAN PENGHAMBAT MODERNISASI DESA PAKRAMAN
Authors: Arjawa GPB Suka 
Published: February 2021

Desa pakraman merupakan lembaga tradisionil di Bali yang mempunyai pengaruh mendalam di masyarakat. Desa pakraman dengan banjar parkaram yang ada di dalamnya, merupakan pusat dari jalannya ritual masyarakat Hindu. Akan tetapi, searah dengan perubahan sosial di Bali yang didorong oleh industri pariwisata, masyarakat mulai banyak mempertanyakan sikap rasional desa pakraman terhadap situasi sosial yang ada. Banyak anggota masyarakat yang merasa tersita waktu, tenaga dan biaya akibat berbagai aktifitas ritual sosial di desa. Penelitian ini bertujuan melihat langkah modernisasi yang terjadi di desa pakraman serta melihat faktor pendorong dan penghambat modernisasi tersebut. Penelitian dilakukan di Denpasar, Gianyar dan Tabanan karena tiga daerah ini merupakan wilayah yang paling besar terpengaruh laju pariwisata. Teori yang digunakan adalah teori-teori modernisasi, dengan metode penelitian eksploratif kualitatif. Temuan yang didapaatkan adalah sikap rasionalitas merupakan pendorong utama kemajuan-kemajuan yang terjadi pada desa pakraman. Sikap dan nilai-nilai tradisional merupakan penghambat utama modernisasi desa pakraman.
Jak zostać przedsiębiorcą zagranicznym w Polsce? Prawne i praktyczne aspekty prowadzenia działalności gospodarczej przez przedsiębiorców zagranicznych w Polsce
Authors: Zygier Marta 
Published: February 2021

Niniejsza praca ma na celu przedstawienie prawnych aspektów związanych z prowadzeniem działalności w Polsce przez przedsiębiorców zagranicznych. Autorka opisała dopuszczalne formy działalności gospodarczej, umożliwiające rozwój strategii biznesowej zagranicznych przedsiębiorców na terenie naszego kraju. Przedmiotem analizy są również praktyczne aspekty związane z rejestracją w Polsce nowych firm. Celem artykułu jest wskazanie wielości dopuszczalnych form prowadzenia działalności wraz z praktycznym aspektem dla utworzenia i prowadzenia działalności gospodarczej. Autorka ukazała, iż dzięki proceduralnym ułatwieniom przedsiębiorcą można zostać w jeden dzień, nawet na odległość: składając wymagane dokumenty za pośrednictwem internetowych formularzy wymaganych w celu wpisania do rejestru zarówno jednoosobowej firmy, jak i spółki. Jednocześnie opisała niedoskonałości systemów elektronicznych służących do rejestrowania działalności, podkreślając tym samym, iż ułatwienia w utworzeniu i prowadzeniu własnej działalności przede wszystkim występują w teorii, zaś w praktyce przedsiębiorcy nadal muszą dopełnić szeregu formalności.