bluuebunny/crossref_metadata_2025_split huggingface dataset:
IMPLIKASI PERGESERAN INSINYUR DARI SEKTOR PUBLIK KE SEKTOR SWASTA
Authors: Nasution Dirga Putra , Arifin Hassanul , Sembiring Nola Widya Putri B , Abrari Suci Zabran 
Published: October 2021

Abstrak
Tujuan dari penelitian ini adalah untuk mengetahui apakah ada implikasi ketika seorang insinyur teknik sipil pindah dari sektor publik ke sektor swasta. Menggunakan metode kualitatif dengan studi kepustakaan sebelumnya penelitian ini mengambil data sekunder dari artikel dan jurnal yang kredibel sebagai bahan utama penelitian. Setelah menyelesaikan penelitian dan juga tinjauan ilmiah, peneliti menemukan bahwa ada indikasi ketika seorang insinyur berubah dari publik ke sektor swasta. Ada perubahan struktur gaji, perubahan citra, jenis pekerjaan, keamanan kerja, dan lain-lain. Bagi masyarakat, ini adalah industri yang lebih efisien tetapi dengan kepercayaan yang lebih dipertanyakan
Kata kunci: Teknik Sipil, Insinyur, Implikasi, Sektor Publik, Sektor Swasta

Abstract
The purpose of this research is to know if there is any implication when a civil engineering engineer makes a move from the public sector to the private sector. Using qualitative methods with previous library studies this research takes data secondary from credible articles and journals as the main material of research. Upon completing research and also a scholarly review, researchers found that there were indications when an engineer changed from the public to the private sector. There are changes in salary structure, changes in image, kinds of work, job security, among other things. For society, it is primarily a more efficient industry but with more questionable trustworthiness.
Keywords: Civil Engineering, Engineer, Implication, Public sector, private sector
IDENTIFIKASI BAHAYA DAN PENILAIAN RISIKO PADA PROSES PEKERJAAN PEMASANGAN ATAP SANDWICH PANEL
Authors: Nabila Fira , Prihantono Prihantono , Anisah Anisah 
Published: October 2021

Abstrak
Penelitian ini bertujuan untuk mengetahui bahaya dan risiko pada proses pekerjaan pemasangan sandwich panel, proses identifikasi bahaya dan risiko menggunakan instrumen lembar Job Safety Analysis sedangkan penilaian risiko menggunakan metode semi kuantitatif W.T Fine J yang mengacu pada standar AS/NZS 4360:2004 tentang Risk Management. Pengambilan data dilakukan dengan menggunakan metode observasi lapangan, wawancara dan focus group discussion. Data yang diperoleh dianalisis dalam bentuk tabel identifikasi bahaya dan penilaian risiko kemudian dideskripsi secara objektif. Hasil penelitian menunjukkan bahwa terdapat enam bahaya dalam proses pekerjaan pemasangan sandwich panel antara lain bahaya mekanis, listrik, fisik, biologi, ergonomis dan biologis. Risiko yang teridentifikasi sebanyak 21 risiko dengan 7 level risiko Very High (33%), 5 level Priority 1 (24%), 6 level Substansial (29%) dan 3 level Priority 3 (14%).
Kata kunci: Identifikasi bahaya, penilaian resiko, JSA, sandwich panel
Abstract
This study aims to determine the hazards and risks in the work process of installing sandwich panels, the process of identifying hazards and risks using the Job Safety Analysis sheet instrument while the risk assessment uses the semi-quantitative W.T Fine J method which refers to the AS/NZS 4360:2004 standard on Risk Management. Data collection was carried out using field observations, interviews and focus group discussions. The data obtained were analyzed in the form of a table of hazard identification and risk assessment and then described objectively. The results showed that there were six hazards in the work process of installing sandwich panels, including mechanical, electrical, physical, biological, ergonomic and biological hazards. The identified risks were 21 risks with 7 levels of Very High risk (33%), 5 levels of Priority 1 (24%), 6 levels of Substantial (29%) and 3 levels of Priority 3 (14%).
Keywords: Hazard identification, risk assessment, JSA, sandwich panel
Combined Usage of Different Geosteering Methods and Vendor Independent Bed Boundary Mapping in Complex Geological Environment on a Real-Life Example from West Kazakhstan
Authors: Mukanov Yerlan Muratovich , Chzhen Igor Victorovich , Tagirov Anzor Rizvanovich , Kurmanbayev Yerkin Zhumatovich , Zaripov Nurlan Slyamgazhievich , Utegulov Gaziz Kanatbekovich , Skorokhodov Damir Vyacheslavovich , Shafikova Yulia Rustemovna , Belousova Natalia Aleksandrovna 
Published: October 2021

Summary
Drilling lateral wells nowadays is considered to be the most widely used method for producing hard-to-recover hydrocarbon reserves. Technologies used while geosteering the well are developing rapidly making high-level geosteering the key for cutting costs on drilling and enhancing well production.
Due to low prices for hydrocarbons, oil companies are trying to find new, up-to-date approaches that will allow them to reduce capital and operating expenses while still enhancing the efficiency of drilling wells in target zones. One of such technology will be shown in this abstract through the example of a successfully drilled well in Akingen oilfield, Republic of Kazakhstan.
Seismic Facies Analysis of Lower Productive Series of Gurgan-Deniz Field in South Caspian Basin with the Aid of Seismic Attributes
Authors: Zamanbayov Ulvi 
Published: October 2021

Abstract
Drilled for the first time in 1946 and one of the oldest fields in the South Caspian Basin located in the western part of Apsheron sill, Gurgan-Deniz has been subject to redevelopment. A 3D seismic survey, conducted over the area for the first time, has been interpreted, analysing the lower Productive Series with regard to seismic facies and prospectivity. The facies analysis allows for better understanding of eustatic levels in the region and depositional environments of lower Productive Series in the area.
A composite seismic attribute Sweetness and an RGB blend of Spectral Decomposition have been applied to the 3D volume, as well as to the interpreted stratigraphic surfaces. With the aid of the attributes and petrophysical well description, direct and indirect facies interpretation have been carried out. First, considering reflection parameters such as parallelism, continuity and hummockiness, as well as sedimentary features. Subsequently, reaching conclusions on depositional processes, environments, and geological evolution. Finally, analysing field prospectivity and migration pathways.
Eight seismic facies have been identified by analysing stratigraphic horizons representing the tops of Kalin Suite (KaS), Pre-Kirmaky Sand Suite (PK) and Kirmaky Suite (KS). Facies have been interpreted as mass-flow deposits, amalgamated channel systems, channel and bar systems, sheetflow and floodplain deposits in a varying lacustrine-fluvial environment. KaS has been deposited following a sea- level drop and increased sediment inflow from Palaeo-Volga. The origin of the mass-flow facies is thought to be related to the increase of sedimentation speed, as well as tectonics decreasing the terrace stability. PK shows evidence of further sea-level drop and shows mainly fluvial depositional environment. Starting from KS, sea level has started to rise, once again showing mixed depositional environment. Attribute anomalies have been explored in the lower wing of the anticline structure in PK and KaS. A 3-way trap and possible migration pathways generate considerable risks.
To Increase the Efficiency of Low Pressure Gas Transportation in the Gunashli Energy Sector
Authors: Shahlarli Mansur Elkhan 
Published: October 2021

Abstract
The role of the Caspian Sea in the development of the oil and gas industry for our country and the world is undeniable. The discovery of new fields creates conditions for the development of efficient and modern technologies. The need for energy causes us to move away from the shore day by day and encounter bigger obstacles with increasing depth. Gunashli field sites are located 120 km from the shore and at a depth of 80-150 m. Studies have shown that during the inter-site transport of low pressure gas, mechanical impurities and gas leaks accumulate in the part of the pipeline rising from the seabed to the platform, which prevents the flow of gas to the low pressure compressor station. Low-pressure gas enters the compressor station with liquids and mechanical mixtures, which leads to rapid wear and tear of the working parts of expensive compressor machines. Initially, according to d'Alambert principle, the forces acting on liquid and solid particles in a vertical pipe were investigated, then the results are shown. Due to this results, we have proposed a new design for cleaning the gas at the bottom of the sea and transferring it to the separator.
A New Approach to the Management of Functional Dyspepsia: Results of a Multicenter, Randomized, Double-blind, Placebo-controlled Trial
Authors: Ivashkin Vladimir T. , Shulpekova Yulia O. , Maev Igor V. , Grinevich Vladimir B. , Khlynov Igor B. , Shvarts Yury G. , Glazunov Alexey B. 
Published: October 2021

Abstract
The aim of the study was to evaluate the efficacy and safety of Kolofort (a complex medicine containing technologically processed forms of antibodies to S-100 protein, tumor necrosis factor-α and histamine) in the management of functional dyspepsia (FD) in outpatient clinical practice.Methods: 309 outpatients at the age of 18-45 in whom functional dyspepsia was diagnosed according to the Rome IV criteria were enrolled in a multicenter, double-blind, placebo-controlled, randomized clinical trial. Patients were randomized in two groups receiving Kolofort or Placebo 2 tablets tid for 8 weeks. The primary endpoint of the study was a change in the FD symptoms severity score according to the Gastrointestinal symptom score (GIS) at week 8. The demand in accessory medications was also assessed.Results: at week 8 the reduction in GIS sum score was observed in Kolofort group and Placebo group (by 7.2±3.3 [7.2±3.4] and 6.3±4.6 [6.2±4.5], respectively, p=0.041 [0.039]). The proportion of cases with GIS score reduction by ≥4 was 88.1% [88.6%] and 79.1% [79.6%] in Kolofort group and Placebo group, respectively (p=0.051 [p=0.046]). None of the patients in Kolofort group had experienced progression of FD symptoms or required additional therapy. 29 AEs were recorded including 16 cases in 13 (8.6%) patients in Kolofort group and 13 AEs in 12 (7.6%) patients in Placebo group.Conclusion: the clinical trial demonstrates the positive effect of Kolofort in FD with a favorable safety profile.
Establishment of a Novel CD34+ Hematopoietic Stem Cell-derived Xenograft Model of Hyperleukocytic Acute Myeloid Leukemia
Authors: Jin Yanxia , Luo Ziyi , Ma Linlu , Chen Yanling , Zheng Yujia , Liang Yuxing , Tong Xiqin , Yang Qian , Wu Balu , Wu Sanyun , Shen Hui , Liu Li , Liu Yin , Yang Tian , Zhou Fuling 
Published: October 2021

Abstract
BackgroundHyperleukocytic acute myeloid leukemia (HLL) with high early mortality is difficult to therapy. The related research on HLL is still in its infancy, and the establishment of a patient derived xenograft (PDX) model of HLL has not been fully reported, especially the CD34+ hematopoietic stem cell-derived xenograft model of HLL. MethodsUsing the routine blood examination, smear analysis and bone marrow biopsy, flow cytometry, mutation analysis to evaluate the establishment of HLL model. And the correlation between the survival time in mice and in patients was analyzed by a linear regression model with variable selection “entered” with SPSS software.ResultsOur findings demonstrated that the leukocyte counts reached up to 37.35Í109/l, and the immunophenotypes of hCD45+, hCD15+ and hCD33+ cells were detected in peripheral blood (PB) and bone marrow (BM) after inoculation with cells derived from PB for establishment of the HLL PDX model. The same results were demonstrated after inoculation with cells derived from BM of the patient. For the CD34+ hematopoietic stem cell derived xenograft model, the CD34+ hematopoietic stem cells more severely infiltrated the BM, liver and spleen. More importantly, human WT1 and NRAS mutants were detected in the liver, spleen and BM of the mouse. By performing a comparative analysis of multiple experiments, we found that mice receiving a higher irradiation dose of 2.5 Gy and higher injected cell counts derived from PB exhibited a shorter survival time. Furthermore, the constructed model mice injected with NRAS, DNMT3A, FLT3, or NMPM1 gene mutations had shorter survival times. The correlation analysis showed that the survival time in mice was significantly related with the survival status of the enrolled patients. ConclusionsWe successfully established a novel CD34+ hematopoietic stem cell-derived xenograft model of HLL, which shows great promise for mechanistic research, drug screening, individualized therapy, clinical efficacy assessment and precision medicine in HLL.
Improving the Performance of Organic Lead-tin Laminated Perovskite Solar Cells From the Perspective of Device Simulation
Authors: Hao liangsheng , Wu Xuefei , Wang Huaning , Song Yubao , Ma Xinxia , Zeng Zhuoxiong , Wu Jiang , Tao Yuting , Wang Zhongyu , Liu Yihao 
Published: October 2021

Abstract
The toxic lead in traditional perovskite solar cells (PSCs) poses a fatal threat to the environment, and it takes time and technology to complete the transition to lead-free perovskite solar cells. In this work, we introduce a lead-tin laminated perovskite solar cell, which can obviously reduce the toxicity of lead. Our ultimate goal is to study the factors that affect the performance of the device. On the basis of reducing the lead-based perovskite layer, use SACPS-1D (solar cell capacitor simulator) to optimize the parameters to maximize the performance of the entire device. Adjusting the physical parameters, we got the power conversion efficiency (PCE) of 17.59% and 6.14% for single-cell lead-based and single-cell tin-based perovskite solar cells respectively, which are close to the experimental results. The simulation results show that under the laminated structure, the thickness of the two perovskite absorber materials based on lead and tin has a certain influence on the performance of the device. After optimization, it is determined that the best thicknesses of lead-based absorption layer (LBA) and tin-based absorption layer (TBA) are 20nm and 150nm respectively. Optimize the doping concentration of acceptor and donor of the laminated perovskite absorber layer to obtain higher PCE and open circuit voltage (VOC). The best values are 1015cm-3 and 1016cm-3 for LBA and TBA respectively. We also found that when adjusting the positions of LBA and TBA, the recombination rate under different defect densities verified that the laminated absorption layer close to the light source side dominates the device performance. Provide reference for future optimization of laminated perovskite solar cells. Considering these factors comprehensively, we optimized the device performance parameters as follows: VOC=0.9266V, JSC =19.5556 mA/cm2, FF=71.12 % and PCE=12.89%.
Comparative Risk of Incidence and Clinical Outcomes of COVID-19 among Proton Pump Inhibitor and Histamine-2 Receptor Antagonist Users: A Nationwide Retrospective Cohort Study
Authors: Park Jimyung , You Seng Chan , Cho Jaehyeong , Park Chan Hyuk , Shin Woon , Park Rae Woong , Seo Seung In 
Published: October 2021

Abstract
Background: This study aimed to evaluate incidence risk and severe clinical outcomes in COVID-19 disease among short-term users of acid-suppressants in South Korea.Methods: This retrospective cohort study, conducted using a nationwide claims database for South Korea, used data from patients with COVID-19 tested between January 1 and May 15, 2020. Patients aged over 18 years and prescribed proton pump inhibitors (PPI) or histamine-2 receptor antagonist (H2RA) for more than 7 days were identified. Primary outcome was COVID-19 while secondary outcomes were all-cause mortality, hospitalization with respiratory disease, or intensive respiratory intervention. Large-scale propensity scores were used to match patients, while the Cox proportional hazard model was utilized to evaluate any association between exposure and outcome(s). The risk estimates were calibrated by using 123 falsification endpoints.Results: We identified 26,166 PPI users and 62,117 H2RA users. After propensity score matching, compared to H2RA use, PPI use was not significantly associated with lower risk of COVID-19 (calibrated hazard ratio [HR], 0.81 [95% confidence interval (CI), 0.30–2.19]); moreover, PPI use was not associated with adverse clinical outcomes in COVID-19, namely, hospitalization with respiratory disease (calibrated HR, 0.88 [95% CI, 0.72–1.08]), intensive respiratory interventions (calibrated HR, 0.92 [95% CI, 0.46–1.82]), except for all-cause mortality (calibrated HR, 0.54 [95% CI, 0.31–0.95]).Conclusions: In this study, we found that the PPI user was not associated with risk of COVID-19 compared to H2RA users. There was no significant relationship between severe clinical outcomes of COVID-19 and exposure to PPI compared with H2RA, except for all-cause mortality.
Nexus of co2 emissions and economic growth in pakistan: analysis by using extended stirpat model
Authors: Rasool Syed Aziz , Rahim Tariq , Khan Muhammad Ali 
Published: October 2021

Abstract
The main purpose of this study is to analyze the relationship between economic growth (GDP per capita) and CO2 emissions in Pakistan. This study applies the theoretical framework of Dietz and Rosa’s STIRPAT Model, widely used for assessing the environment quality. The additional major determinants of CO2 emissions introduced by the extended STIRPAT model include total energy use, Industry, value-added, financial development, trade openness, and urban population. The empirical results reveal that; total energy use has a positive and significant relationship with CO2 emissions. The relationship between GDP and CO2 emissions is positive and insignificant in the country. Industry, value-added has an insignificant relationship with CO2 emissions in the country. The urban population has a direct and positive relationship with CO2 emissions. Trade openness has a long-run positive and significant relationship with CO2 emissions in the country. In general, this case study offers a relevant policy for controlling the enhancement in the CO2 emissions in the selected sample unit; Pakistan, and other similar states that possess the same socio-economic condition.
Does Serum Bilirubin Add Value in the Diagnosis of Appendicitis? A Multi-Institution Analysis of 2024 Patients
Authors: Maurice Andrew Phillip , Swinson Benjamin David , Apellaniz Eduardo Miguel , King Sarah Emily , Mackay Thomas Grant , Burstow Matthew John , Chua Terence Chuan , Smithers Bernard Mark , Sethi Harsheet 
Published: October 2021

Abstract
BACKGROUNDEven with modern diagnostics, appendicitis can be difficult to diagnose accurately. Negative appendicectomies (NA) and delayed diagnosis of complicated appendicitis (CA, i.e. perforation or abscess) remain common. Serum bilirubin has been proposed as an additional biomarker to assist with the diagnosis of appendicitis. In this large series, we assessed the value of bilirubin in the diagnosis of appendicitis.METHODS A retrospective review of patients with suspected appendicitis at three hospitals over a three year period was performed. All consecutive patients with appendicectomy were included. In addition, a “discharged” sub-group of consecutive patients who were admitted with suspected appendicitis but discharged without an operation was also identified.Demographic data, presence of fever, tachycardia, total white cell count (WCC), neutrophil count, total serum bilirubin, operative findings and final histology were recorded. Multivariate logistic regression was performed to determine independent predictors of appendicitis and CA. Receiver-operator analysis was performed to compare bilirubin to WCC and neutrophil count.RESULTS There were 2024 patients: 1167 had uncomplicated appendicitis, 355 had CA and 303 underwent NA. 200 non-surgical "discharged" patients were included for comparison. Compared to those without appendicitis (NA and discharged groups), increased serum bilirubin was associated with an increased likelihood of appendicitis (OR 1.030 (1.013, 1.048), p<0.0001) and increased likelihood of CA (OR 1.035, 95% CI (1.021, 1.050), p<0.001). These results remained significant when the discharged group, NA group and uncomplicated appendicitis groups were analyzed separately.The sensitivity and specificity of bilirubin was inferior to neutrophil count for the diagnosis of appendicitis (AUC 0.657 versus 0.725, p<0.0001). Bilirubin, WCC and neutrophils each were all relatively insensitive and non-specific over a variety of cut-off values and combinations did not improve their accuracy.CONCLUSION Hyperbilirubinaemia was independently associated with an increased likelihood of both uncomplicated and complicated appendicitis, however had similar sensitivity and specificity when compared to WCC or neutrophils. Bilirubin, neutrophil count and WCC alone are not discriminatory enough to be used in isolation but may be incrementally useful adjuncts in pre-operative assessment of patients with suspected appendicitis.
Sequence Variability of Hepatitis B Virus (HBV) Surface Antigen Gene (S Gene) Among the Non-responders of Antiviral Therapy
Authors: Alam Naveed , Daudzai Zubaida 
Published: October 2021

Abstract
BackgroundHepatitis B Virus (HBV), has been among the wide spread lethal causative agent of mortality in the population of Pakistan. Prolonged administration of antiviral therapy for chronic hepatitis B may result in the development of hepatitis B viral mutants. ObjectivesTo gain insight into the mechanism involved in the sequence variability of Hepatitis B Virus (HBV) surface antigen gene (S gene) among responders and non-responders to antiviral therapy, baseline characteristics of the patients and sequences within the S region were investigated in pre-treatment serum samples of responders and post-treatment serum samples of non-responders. Data collection and methodologyThe data was collected from 15 individuals with chronic hepatitis B from Khyber Pakhtunkhwa (KPK) province, Pakistan. The antiviral response was independent of viral genotypes, and nonresponse to antiviral therapy was associated with a complex variability of the viral mutants as determined by PCR. ResultsThe sequence analysis of the S gene among responders and non-responders patients of pre and post-treatment with antiviral therapy showed variability in DNA sequence marked as Pakistani isolates make a distinct cluster in the phylogenetic tree. The S gene of HBV isolates from KPK province shows some similarities with isolates of other countries. No significant variations of nucleotides in the S gene of HBV was found among the responders and non-responders receiving antiviral therapy indicating that S gene may not be important with respect to treatment outcome. ConclusionIt illustrates that antigenicity of other various HBV proteins can be targeted in order to design more effective vaccines against the local strains.