bluuebunny/crossref_metadata_2025_split huggingface dataset:
IDENTIFIKASI KUALITAS AIR LAUT DI PERAIRAN PANTAI DEPOK DESA HARAPAN KABUPATEN BENGKULU TENGAH
Authors: Susanti Yuli , Suwarsono  , Supiyati  
Published: November 2023

Pantai Depok yang terletak di desa Harapan di Kabupaten Bengkulu tengah memiliki banyak potensi yang dapat dikembangkan diantaranya perikanan, budidaya tambak dan pariwisata. Penelitian ini bertujuan untuk mengetahui kualitas air laut di perairan Pantai Depok, Desa Harapan Kabupaten Bengkulu Tengah. Metode yang digunakan adalah pengukuran langsung dengan parameter kecepatan arus, salinitas, suhu, pH dan kekeruhan. Hasil yang didapatkan pada penelitian ini yaitu, kecepatan arus rata-rata adalah 0,26 m/s, salinitas 29,01 ‰, suhu 29,19 °C, pH 7,58 dan kekeruhan 6,07 NTU. Kondisi surut kecepatan arus 0,22 m/s, salinitas 29,96 ‰, suhu 29,41 °C, pH 7,69 dan kekeruhan 6,47 NTU. Berdasarkan baku mutu biota laut menurut KEPMEN LH No. 51 Tahun 2004, hasil pengukuran kekeruhan dan salinitas menunjukkan tidak memenuhi baku mutu biota laut. Perhitungan didasarkan pada persamaan indeks pencemaran dan nilai indeks pencemaran tertinggi terdapat pada parameter kekeruhan dan pH. Nilai parameter kekeruhan berkisar antara 1,77 NTU hingga 2,69 NTU pada saat pasang dan dari 1,83 NTU hingga 2,34 NTU pada saat surut. Nilai Indeks Pencemaran pH berkisar antara 1,09 hingga 1,11 pada saat pasang dan dari 1,11 hingga 1,14 pada saat surut. Berdasarkan klasifikasi indeks pencemaran, parameter pH dan kekeruhan masuk dalam kategori tercemar ringan.
Studi Material Organik batuan Induk Sebagai Sumber Batuan Hidrokarbon Lapangan 'X' Berdasarkan Data Geokimia
Authors: Jayadi Harsano , Lestari Windi , Meidji Icha Untari , Atmoko Widi 
Published: November 2023

The need for oil and gas has led to increased exploration to produce hydrocarbons in various basins and discover new reserves. This was also done in the Kutai basin on the eastern island of Kalimantan using a quantitative correlation between geophysical logs and rock core data and qualitative analysis by analyzing geochemical data derived from the host rock. To determine the characteristics of the hydrocarbon source rock in the three test wells, three types were analyzed, namely organic material richness, organic material type, and maturity level. For the Maau-1, Wahau-1, and Tengkawang-1 test wells, the organic material content has an excellent type to become source rock. The three wells are of medium-special hydrocarbon potential in organic material, making them very likely to produce oil and gas. As for the nature of the material content, the three wells have a mature level of the source rock, making them very potential as the very good source rock.
The need for oil and gas has led to increased exploration to produce hydrocarbons in various basins and discover new reserves. This was also done in the Kutai basin on the eastern island of Kalimantan using a quantitative correlation between geophysical logs and rock core data and qualitative analysis by analyzing geochemical data derived from the host rock. To determine the characteristics of the hydrocarbon source rock in the three test wells, three types were analyzed, namely organic material richness, organic material type, and maturity level. For the Maau-1, Wahau-1, and Tengkawang-1 test wells, the organic material content has an excellent type to become source rock. In terms of organic matter, all three wells have medium-special hydrocarbon potential and, therefore, high potential to produce oil and gas. As for the nature of the material content, the three wells have a mature level of the source rock, making them very potential as the very good source rock.
Analisa Deret Fourier Harmonisa Yang Dihasilkan Komputer Dan Laptop Menggunakan Simulasi Matlab/Simulink
Authors: Frensius  , Silalahi Eva Magdalena , Purba Robinson 
Published: November 2023

Harmonisa adalah kelipatan dari frekuensi dasar (50 Hz) dalam sistem energi listrik, yang diakibatkan karena peningkatan penggunaan beban nonlinier di industri, perkantoran, pendidikan dan rumah tangga, sehingga mengakibatkan peningkatan distorsi harmonisa pada jaringan distribusi. Komputer dan laptop adalah beban nonlinier yang merupakan sumber harmonisa arus dalam sistem kelistrikan serta banyak digunakan oleh masyarakat. Tingginya harmonisa dapat merusak peralatan listrik. Penelitian ini membahas masalah harmonisa yang ditimbulkan oleh komputer dan laptop yang berbeda merek, agar diketahui nilai THDv, THDi, THDi orde dominan, persamaan gelombang harmonisa arus dan bentuk gelombang arus. Untuk melakukan penelitian ini, data pengukuran PQA Kyoritsu KEW 6315 di analisa menggunakan metode deret Fourier dan selanjutnya dilakukan simulasi FFT Matlab Simulink. Hasil penelitian ini memperlihatkan nilai THDv pada komputer dan laptop yang berbeda merek, secara keseluruhan memenuhi standar IEEE 519-2014, sementara nilai THDi berkisar antara 80% hingga 86,96% yang tidak memenuhi standar IEEE 519-2014. Orde arus harmonisa dominan yang ditimbulkan oleh komputer dan laptop berbeda merek memiliki pola kecenderungan yang sama pada orde arus harmonisa dominan yang terjadi pada orde ke-3, 5, 7 dan 9, dimana orde ke-3 memiliki nilai THDi dominan tertinggi dengan rentang nilai diantara 40% hingga 52,17%. Juga diperoleh persamaan gelombang arus harmonisa yang dihasilkan oleh komputer dan laptop menggunakan deret Fourier berdasarkan orde arus harmonisa dominan yang sama dari hasil pengukuran yaitu pada orde ke-1, ke-3, ke-5, ke-7, dan ke-9.
Precarious positions: glass ceilings, glass escalators, and glass cliffs in the superintendency
Authors: Timmer Jennifer D. , Woo David S. 
Published: November 2023

IntroductionThe “glass cliff” phenomenon has been observed in many fields; in these situations, women are hired into prestigious, but precarious, leadership positions. In education, little is known about the preexisting district contextual trends into which women leaders are hired, and thus whether a glass cliff might exist in the superintendency. This study explores descriptively whether evidence suggests superintendents in New Jersey might be differentially sorted into “precarious” districts across gender.MethodsOur study utilizes a newly created statewide longitudinal data set to examine descriptive trends in superintendent placement, including multiple measures of precarity. We investigate the presence of the glass ceiling by examining representation in the superintendency, the glass escalator as evidenced by leader qualifications, and the glass cliff as indicated by district characteristics.ResultsNew Jersey employs a higher proportion of women superintendents than the national average. Men and women superintendents are equivalently qualified, on average, though women tend to be paid less. We find that male and female superintendents in the state work in somewhat similar districts, though women are more likely to lead districts serving students from low-income communities and larger proportions of minoritized students.DiscussionThese findings suggest women superintendents in New Jersey are excelling despite serving communities that are often under-resourced. Thus, there is some suggestion of a glass cliff phenomenon in education leadership, as women who obtain the highest positions are also in more precarious settings.
Achieving high-quality silver sintered joint for highly-reliable schottky barrier diodes via pressureless method
Authors: Dai Chenyi , Wang Yong , Lin Pengrong , Hao Zilin , Wang Chaoyang , Feng Xiaocheng , Liu Xueming 
Published: November 2023

The fabrication of silver joints was done using the pressureless sintering technology to suit the demand of high-reliability schottky barrier diodes (SBD). Porosity of 10.6% and shear strength of 39.6 MPa were reached under the optimized parameters of 290°C sintering temperature and 40 min residence time. The sintered joint demonstrated good mechanical/thermal/electrical performance in the ultimate reliability assessment testing, including the temperature cycling test, second sintering test, steady-state lifetime test, and intermittent lifetime test. This study demonstrated the viability of pressureless sintering of silver joints with good high-temperature reliability, which has significant application potential for aeronautical high-reliability power electronics.
Most of the pelvic floor muscle functions in women differ in different body positions, yet others remain similar: systematic review with meta-analysis
Authors: Huang Lu , Zhang Zhi-Yuan , Liu Hong , Gao Min , Wang Xiao-Qi , Duan Xiao-Qin , Liu Zhong-Liang 
Published: November 2023

ObjectivesThis systematic literature review and meta-analysis aimed to determine the effect of body position on the measurement of pelvic floor muscle (PFM) contractility and to analyze the influential factors.Data sourcesFive databases (PubMed, Web of Science, EMBASE, Cochrane Library and Scopus) were searched for relevant studies published up to 12nd October 2023.Study selection or eligibility criteriaIncluded cross-sectional studies had to involve the assessment of pelvic floor muscle function in at least two positions.Study appraisal and synthesis methodsWe calculated standardized mean difference (SMD) with 95% confidence intervals (CI) to ascertain the potential effect of body position on outcomes.ResultsIn total, we included 11 cross-sectional studies to ascertain the potential effect of body position on outcomes. There was no statistical difference in the results of maximum voluntary contraction (MVC) of the pelvic floor muscles when assessed in between supine and standing positions (SMD −0.22; 95% CI −0.72 to 0.28; p = 0.38). The results of the meta-analysis showed significantly larger values of resting voluntary contractions (RVC) measured in the standing position compared to the supine position (SMD −1.76; 95% CI −2.55 to −0.97; p &lt; 0.001). Moreover, pelvic floor muscle movement during pelvic floor muscle contraction in the standing position was significantly better than that measured in the supine position (SMD −0.47; 95% CI −0.73 to 0.20; P &lt; 0.001).ConclusionThe results of this study showed that the RVC and PFM movement varied with the position of the assessment. In contrast, MVC values are independent of the assessment position and can be selected according to clinical needs.Systematic review registrationPROSPERO, identifier CRD42022363734, https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42022363734.
Competition-cooperation mechanism between Escherichia coli and Staphylococcus aureus based on systems mapping
Authors: Li Caifeng , Yin Lixin , He Xiaoqing , Jin Yi , Zhu Xuli , Wu Rongling 
Published: November 2023

IntroductionInterspecies interactions are a crucial driving force of species evolution. The genes of each coexisting species play a pivotal role in shaping the structure and function within the community, but how to identify them at the genome-wide level has always been challenging.MethodsIn this study, we embed the Lotka-Volterra ordinary differential equations in the theory of community ecology into the systems mapping model, so that this model can not only describe how the quantitative trait loci (QTL) of a species directly affects its own phenotype, but also describe the QTL of the species how to indirectly affect the phenotype of its interacting species, and how QTL from different species affects community behavior through epistatic interactions.ResultsBy designing and implementing a co-culture experiment for 100 pairs of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), we mapped 244 significant QTL combinations in the interaction process of the two bacteria using this model, including 69 QTLs from E. coli and 59 QTLs from S. aureus, respectively. Through gene annotation, we obtained 57 genes in E. coli, among which the genes with higher frequency were ypdC, nrfC, yphH, acrE, dcuS, rpnE, and ptsA, while we obtained 43 genes in S. aureus, among which the genes with higher frequency were ebh, SAOUHSC_00172, capF, gdpP, orfX, bsaA, and phnE1.DiscussionBy dividing the overall growth into independent growth and interactive growth, we could estimate how QTLs modulate interspecific competition and cooperation. Based on the quantitative genetic model, we can obtain the direct genetic effect, indirect genetic effect, and genome-genome epistatic effect related to interspecific interaction genes, and then further mine the hub genes in the QTL networks, which will be particularly useful for inferring and predicting the genetic mechanisms of community dynamics and evolution. Systems mapping can provide a tool for studying the mechanism of competition and cooperation among bacteria in co-culture, and this framework can lay the foundation for a more comprehensive and systematic study of species interactions.
A new contribution to the raptorial ciliate genus Lacrymaria (Protista: Ciliophora): a brief review and comprehensive descriptions of two new species from Changjiang Estuary
Authors: Tang Jin , Zhang Gongaote , Guo Junqi , Luo Lingxuan , Jiang Jiamei , Pan Hongbo 
Published: November 2023

Ciliates serve as excellent indicators for water quality monitoring. However, their utilization is hindered by various taxonomic confusions. The ciliate genus Lacrymaria Bory de Saint-Vincent, 1824 is commonly found in different aquatic habitats, but its taxonomy has been sparsely investigated using state-of-the-art methods. This study investigated two new Lacrymaria species from Nanhui Wetland, Shanghai, China, using living observation, protargol staining, and molecular phylogeny methods. Lacrymaria songi sp. nov. is 180–340 × 20–25 μm in size and possesses 12–16 somatic kineties, 1 terminal contractile vacuole, 2 macronuclear nodules, and 2 types of rod-shaped extrusomes. Lacrymaria dragescoi sp. nov. is distinguished from its congeners by its cell size of 210–400 × 25–35 μm, 14–17 somatic kineties, 1 terminal contractile vacuole, 1 macronucleus, and 2 types of rod-shaped extrusomes. Phylogenetic analyses based on SSU rRNA gene sequences indicate that Lacrymariidae is monophyletic but Lacrymaria is not. Additionally, a brief review of the genus Lacrymaria is provided in this study. We suggest that L. bulbosa Alekperov, 1984, L. lanceolata Kahl, 1930, and L. ovata Burkovsky, 1970 be removed from the genus and propose Phialina lanceolata nov. comb. and Phialina ovata nov. comb. for the latter two.ZooBank registration: Present work: urn:lsid:zoobank.org:pub:CDFB1EBD-80BD-4533-B391-CEE89F62EDC4 Lacrymaria songi sp. nov.: urn:lsid:zoobank.org:act:417E7C2D-DAEC-4711-90BB-64AB3CD2F7D5 Lacrymaria dragescoi sp. nov.: urn:lsid:zoobank.org:act:8778D6B0-1F2E-473C-BE19-3F685391A40D.
pts promoter influences antibiotic resistance via proton motive force and ROS in Escherichia coli
Authors: Tao Jian-jun , Li Shao-hua , Wu Jia-han , Peng Xuan-xian , Li Hui 
Published: November 2023

IntroductionGlucose level is related to antibiotic resistance. However, underlying mechanisms are largely unknown.MethodsSince glucose transport is performed by phosphotransferase system (PTS) in bacteria, pts promoter-deleted K12 (Δpts-P) was used as a model to investigate effect of glucose metabolism on antibiotic resistance. Gas chromatography-mass spectrometry based metabolomics was employed to identify a differential metabolome in Δpts-P compared with K12, and with glucose as controls.ResultsΔpts-P exhibits the resistance to β-lactams and aminoglycosides but not to quinolones, tetracyclines, and macrolide antibiotics. Inactivated pyruvate cycle was determined as the most characteristic feature in Δpts-P, which may influence proton motive force (PMF), reactive oxygen species (ROS), and nitric oxide (NO) that are related to antibiotic resistance. Thus, they were regarded as three ways for the following study. Glucose promoted PMF and β-lactams-, aminoglycosides-, quinolones-mediated killing in K12, which was inhibited by carbonyl cyanide 3-chlorophenylhydrazone. Exogenous glucose did not elevated ROS in K12 and Δpts-P, but the loss of pts promoter reduced ROS by approximately 1/5, which was related to antibiotic resistance. However, NO was neither changed nor related to antibiotic resistance.DiscussionThese results reveal that pts promoter regulation confers antibiotic resistance via PMF and ROS in Escherichia coli.
Comparative genomic analysis of pleurotus species reveals insights into the evolution and coniferous utilization of Pleurotus placentodes
Authors: Sun Lei , Yin Xiaolei , Sossah Frederick Leo , Han Xuerong , Li Yu 
Published: November 2023

Pleurotus placentodes (PPL) and Pleurotus cystidiosus (PCY) are economically valuable species. PPL grows on conifers, while PCY grows on broad-leaved trees. To reveal the genetic mechanism behind PPL’s adaptability to conifers, we performed de novo genome sequencing and comparative analysis of PPL and PCY. We determined the size of the genomes for PPL and PCY to be 36.12 and 42.74 Mb, respectively, and found that they contain 10,851 and 15,673 protein-coding genes, accounting for 59.34% and 53.70% of their respective genome sizes. Evolution analysis showed PPL was closely related to P. ostreatus with the divergence time of 62.7 MYA, while PCY was distantly related to other Pleurotus species with the divergence time of 111.7 MYA. Comparative analysis of carbohydrate-active enzymes (CAZYmes) in PPL and PCY showed that the increase number of CAZYmes related to pectin and cellulose degradation (e.g., AA9, PL1) in PPL may be important for the degradation and colonization of conifers. In addition, geraniol degradation and peroxisome pathways identified by comparative genomes should be another factors for PPL’s tolerance to conifer substrate. Our research provides valuable genomes for Pleurotus species and sheds light on the genetic mechanism of PPL’s conifer adaptability, which could aid in breeding new Pleurotus varieties for coniferous utilization.
Spectral-based thickness profiling of the corpus callosum enhances anomaly detection in fetal alcohol spectrum disorders
Authors: Fraize Justine , Leprince Yann , Elmaleh-Bergès Monique , Kerdreux Eliot , Delorme Richard , Hertz-Pannier Lucie , Lefèvre Julien , Germanaud David 
Published: November 2023

IntroductionFetal alcohol spectrum disorders (FASD) range from fetal alcohol syndrome (FAS) to non-syndromic forms (NS-FASD). The neuroanatomical consequences of prenatal alcohol exposure are mainly the reduction in brain size, but also focal abnormalities such as those of the corpus callosum (CC). We previously showed a narrowing of the CC for brain size, using manual measurement and its usefulness to improve diagnostic certainty. Our aim was to automate these measurements of the CC and identify more recurrent abnormalities in FAS subjects, independently of brain size reduction.MethodsWe developed a fast, automated, and normalization-free method based on spectral analysis to generate thicknesses of the CC continuously and at singular points (genu, body, isthmus, and splenium), and its length (LCC). We applied it on midsagittal section of the CC extracted from T1-anatomical brain MRI of 89 subjects with FASD (52 FAS, 37 NS-FASD) and 126 with typically development (6–20 y-o). After adjusting for batch effect, we compared the mean profiles and thicknesses of the singular points across the 3 groups. For each parameter, we established variations with age (growth charts) and brain size in the control group (scaling charts), then identified participants with abnormal measurements (&lt;10th percentile).ResultsWe confirmed the slimming of the posterior half of the CC in both FASD groups, and of the genu section in the FAS group, compared to the control group. We found a significant group effect for the LCC, genu, median body, isthmus, and splenium thicknesses (p &lt; 0.05). We described a body hump whose morphology did not differ between groups. According to the growth charts, there was an excess of FASD subjects with abnormal LCC and isthmus, and of FAS subjects with abnormal genu and splenium. According to the scaling charts, this excess remained only for LCC, isthmus and splenium, undersized for brain size.ConclusionWe characterized size-independent anomalies of the posterior part of the CC in FASD, with an automated method, confirming and extending our previous study. Our new tool brings the use of a neuroanatomical criterion including CC damage closer to clinical practice. Our results suggest that an FAS signature identified in NS-FASD, could improve diagnosis specificity.
Subpopulation treatment effect pattern plot analysis: a prognostic model for distant recurrence-free survival to estimate delayed adjuvant chemotherapy initiation effect in triple-negative breast cancer
Authors: Morante Zaida , Ferreyra Yomali , Pinto Joseph A. , Valdivieso Natalia , Castañeda Carlos , Vidaurre Tatiana , Valencia Guillermo , Rioja Patricia , Fuentes Hugo , Cotrina José M. , Neciosup Silvia , Gomez Henry L. 
Published: November 2023

IntroductionTriple-negative breast cancer (TNBC) is a heterogeneous disease associated with a poor prognosis. Delaying in time to start adjuvant chemotherapy (TTC) has been related to an increased risk of distant recurrence-free survival (DRFS). We aimed to develop a prognostic model to estimate the effects of delayed TTC among TNBC risk subgroups.Materials and methodsWe analyzed 687 TNBC patients who received adjuvant chemotherapy at the Instituto Nacional de Enfermedades Neoplasicas (Lima, Peru). Database was randomly divided to create a discovery set (n=344) and a validation set (n=343). Univariate and multivariate Cox regression models were performed to identify prognostic factors for DRFS. Risk stratification was implemented through two models developed based on proportional hazard ratios from significant clinicopathological characteristics. Subpopulation treatment effect pattern plot (STEPP) analysis was performed to determine the best prognostic cut-off points for stratifying TNBC subgroups according to risk scores and estimate Kaplan-Meier differences in 10-year DRFS comparing TTC (≤30 vs.&gt;30 days).ResultsIn univariate analysis, patients aged ≥70 years (HR=4.65; 95% CI: 2.32-9.34; p=&lt;0.001), those at stages pT3-T4 (HR=3.28; 95% CI: 1.57-6.83; p=0.002), and pN2-N3 (HR=3.00; 95% CI: 1.90-4.76; p=&lt;0.001) were notably associated with higher risk. STEPP analysis defined three risk subgroups for each model. Model N°01 categorized patients into low (score: 0–31), intermediate (score:32–64), and high-risk (score: 65–100) cohorts; meanwhile, Model N°02: low (score: 0–26), intermediate (score: 27–55), and high (score: 56–100). Kaplan-Meier plots showed that in the discovery set, patients with TTC&gt;30 days experienced a 17.5% decrease in 10-year DRFS rate (95%CI=6.7-28.3), and the impact was more remarkable in patients who belong to the high-risk subgroup (53.3% decrease in 10 years-DRFS rate). Similar results were found in the validation set.ConclusionsWe developed two prognostic models based on age, pT, and pN to select the best one to classify TNBC. For Model N°02, delayed adjuvant chemotherapy conferred a higher risk of relapse in patients ≥70 years and who were characterized by pT3/T4 and pN2/N3. Thus, more efforts should be considered to avoid delayed TTC in TNBC patients, especially those in high-risk subgroups.