bluuebunny/crossref_metadata_2025_split huggingface dataset:
Oznaczanie wilgoci w biomasie metodą miareczkowania kulometrycznego Karla Fischera
Authors:   Instytut Nafty i Gazu – Państwowy Instytut Badawczy, Jędrychowska Sylwia , Kowalczyk Anna ,   Instytut Nafty i Gazu – Państwowy Instytut Badawczy
Published: May 2022

W artykule przedstawiono prace nad wykorzystaniem metody miareczkowania kulometrycznego Karla Fischera z odparowaniem do oznaczania zawartości wody w biomasie. Przeprowadzono badania sześciu rodzajów próbek biomasy roślinnej: zmielonej kawy otrzymanej jako odpad po zaparzeniu, słomy pszenicznej, siana, łupin orzecha włoskiego oraz zrębków drewna leszczynowego i świerkowego. Wykonano badania zawartości wody we wszystkich pozyskanych produktach i porównano wyniki z wynikami otrzymanymi dwiema innymi metodami stosowanymi standardowo do badania wilgoci w biomasie, tj. metodą wagosuszarkową i destylacyjną. Stwierdzono, że wszystkie metody wykazały dobrą zgodność w zakresie wyników uzyskanych dla przebadanych próbek. Najmniej przydatna okazała się metoda destylacyjna, której rezultaty najbardziej odbiegały względem pozostałych metod. Wykonanie analizy tą techniką wymaga długiego czasu, jest ona dość pracochłonna i niezautomatyzowana. Najszybszą techniką jest metoda wagosuszarkowa, ale cechuje ją mniejsza precyzja w stosunku do metody kulometrycznej. Wyniki otrzymane tą metodą mogą być zawyżone ze względu na to, że miarą zawartości wody w badanej próbce jest ubytek masy, który może być związany nie tylko z obecnością wody, ale także z innymi lotnymi substancjami uwalnianymi w trakcie badania. Metoda miareczkowania kulometrycznego Karla Fischera jest natomiast metodą selektywną i podczas analizy oznaczana jest tylko woda odparowywana z próbki, nawet gdyby z próbki uwalniały się jeszcze inne substancje lotne w warunkach badania. Metoda miareczkowania kulometrycznego Karla Fischera z odparowaniem próbki w piecyku wykazała się największą precyzją. Jest łatwa w wykonaniu i zautomatyzowana. Stwierdzono, że metoda ta może być z powodzeniem stosowana w badaniu biomasy. Zawartość wody we wszystkich pozyskanych próbkach biomasy wahała się w przedziale od 8% do 10,5% (m/m). W celu zbadania możliwości oznaczenia zawartości wody w szerszym zakresie pomiarowym próbki biomasy suszono w suszarce laboratoryjnej w ciągu 4 godzin w temperaturze 105°C oraz dodatkowo przygotowano próbki modelowe o różnej zawartości wody z wykorzystaniem zmielonej kawy jako matrycy. Na przygotowanych próbkach wykonano badania wilgoci metodą miareczkowania kulometrycznego Karla Fischera z odparowaniem. Przeprowadzone badania potwierdziły, że metoda ta świetnie nadaje się do badania próbek biomasy. Charakteryzuje się bardzo dobrą powtarzalnością w badanym zakresie od 0,7% do 75% (m/m).
IMPLEMENTATION OF PREVENTION PROGRAM FOR HEPATITIS B TRANSMISSION FROM MOTHER TO CHILD IN PUBLIC HEALTH CENTER OF SURABAYA
Authors: Kunigara Manika Putri , Setyoboedi Bagus , Sulistiawati Sulistiawati 
Published: May 2022

Introduction: The number of women with Hepatitis B in Surabaya has increased since 2015; the most significant increase occurred in Public Health Center (PHC) A and a consistently high at PHC B. The state has issued a guideline for preventing vertical hepatitis B transmission from mother to child through the Indonesian Ministry of Health issued the Minister of Health Regulation No. 52 of 2017. This program was in the open-access stage and focused on first-level health facilities in 2018-2019. Methods: For this reason, this study aims to analyze the implementation of the prevention program for Hepatitis B transmission from mother to child in PHC A and B, Surabaya, in 2019. This research was an exploratory, descriptive study with a qualitative approach through in-depth interviews and document review. Result: The study results indicated the lack of specificity of counseling materials and gaps in recording forms at PHC A. The presence of hepatitis B cadres as a promotion strategy at PHC B, incompleteness of filling out forms, achieving early detection coverage, not optimal pre- and post-early detection counseling activities, and coverage of case management were still below the target at both PHCs. Conclusion: the implementation of the prevention program for Hepatitis B transmission from mother to child is still not optimal, especially in health promotion at PHC A, surveillance, and case management at both PHC. Keywords: Implementation, Prevention, Transmission of Hepatitis B
Synthesis, Characterization of Chitosan para- hydroxyl Benzaldehyde Schiff Base Linked Maleic Anhydride and the Evaluation of Its Antimicrobial Activities
Authors: AL sahib Sanaa A. , Awad Sana Hitur 
Published: May 2022

Current research included preparation, characterization of some new chitosan- hydroxy benzaldehyde-Schiff bases with maleic anhydride. The present study aimed to the synthesis and characterization of novel chitosan Schiff base compounds using para- hydroxy benzaldeh and maleic anhydride. The derivative of the schiff-chitosan base, which is associated with different drugs, has been replaced with different amino and hydroxy drugs. The derivative is characterized by different analytical techniques. The results of FT-IR studies clearly indicate construction of the chief amine group in chitosan and the emergence of new bands that correspond to the association of maleic anhydride with the chitosan base. TGA, 1H-NMR, biological studies acquired two types of bacteria Gram +ve (Bacillus, Staphylococcus aureus) and two bacteria Gram -ve (Escherichia coli, Pseudomonas aeruginosa) and yeast like fungi (Candida albicans).
Diagnosing COVID-19 Infection in Chest X-Ray Images Using Neural Network
Authors: Zaki Salim M. , Jaber Mustafa Musa , Kashmoola Mohammed A. 
Published: May 2022

With its rapid spread, the coronavirus infection shocked the world and had a huge effect on billions of peoples' lives. The problem is to find a safe method to diagnose the infections with fewer casualties. It has been shown that X-Ray images are an important method for the identification, quantification, and monitoring of diseases. Deep learning algorithms can be utilized to help analyze potentially huge numbers of X-Ray examinations. This research conducted a retrospective multi-test analysis system to detect suspicious COVID-19 performance, and use of chest X-Ray features to assess the progress of the illness in each patient, resulting in a "corona score." where the results were satisfactory compared to the benchmarked techniques. This research results showed that rapidly evolved Artificial Intelligence (AI) -based image analysis can accomplish high accuracy in detecting coronavirus infection as well as quantification and illness burden monitoring.
Assessment of Groundwater Drinking Sources in Eku and Its Environs, in the Niger-Delta Region of Nigeria
Authors: Iloba KI , Akawo NO , Adamu KM , Ohwojeheri OR , Edafiogho MA 
Published: May 2022

This study assessed the quality of hand-dug drinking water sources in Eku and its environs at Eku I, Samagidi, Eku 2, and Okuechi, using the weighted arithmetic water quality index method. Water samples collected from hand-dug wells at these locations returned values for analyzed parameters. Temperature 26 – 30(⁰C), dissolved Oxygen (D.O) 5.2-8mg/l, biological oxygen demand (BOD) 5.2-8(mg/l), Electrical Conductivity (EC) 77-119(µS/cm), Total suspended solids were (TSS) 20000-120000(mg/l), pH 5.31-7.09, Phosphates 2-9.2(mg/l), Alkalinity 28-160(mg/l), Turbidity, 0.02 -0.19(NTU) Total coliform 2 -48 (cfu/ml) and fungal count 1-502. Variations in the values of these parameters were only significant for phosphate, alkalinity, and turbidity between Samagidi and Okuechi at a level of significance of p≤0.05. D.O, BOD, phosphates, total coliform and TSS levels, exceeded standards recommended by NSDWQ/WHO, rendering these water sources unsuitable for drinking purposes. Cluster analysis revealed three cluster groups; cluster 1(Eku2), cluster 2(Samagidi), and cluster 3(Eku1 and Okuechi), while factor analysis showed a strong correlation with pH, D.O, BOD, phosphate, conductivity, total coliform and fungal counts with water sources in the study stations. The calculated WQI for these water sources is 107.56, 95.18, 103.45, and 110.36 for Eku I, Samagidi, Eku 2, and Okuechi, respectively, classifying them as very poor water quality and unsuitable for drinking purposes. Indiscriminate waste disposal, surface runoff and poor sanitary facilities, and the exposed nature of these wells are major contributors to the deterioration of these wells.
The Effective M3Y Residual Interaction In 41Ca As a Nuclear Diffraction Grating of Electrons
Authors: Hussien Rafah M. , Majeed Firas Z. 
Published: May 2022

The total and individual multipole moments of magnetic electron scattering form factors in 41Ca have been investigated using a widely successful model which is the nuclear shell model configurations keeping in mind of 1f7/2 subshell as an L-S shell and Millinar, Baymann, Zamick as L-S shell (F7MBZ) to give the model space wave vector. Also, harmonic oscillator wave functions have been used as wave function of a single particle in 1f7/2 shell. Nucleus 40Ca as core closed and Core polarization effects have been used as a corrective with first order correction concept to basic computation of L-S shell and the excitement energy has been implemented with 2ћω. The core polarizability effect has been utilized to incorporate the rejected space (core + higher arrangement) via L-S shell with a realism interaction of effective M3Y P2 interaction to connect the model space particles in motion with the spouse (p-h). The two body M3Y interactions have been utilized as an interaction residue to calculate the core polarizability matrix elements. Finally, the theoretical result of the form factor has been compared with the experimental results.
A Hybrid Optimization-Based Technique for Channel Estimation in OFDM System: A Parametric Approach
Authors: ARORA MAMTA , Chawla Paras 
Published: May 2022

Abstract
The performance of OFDM system depends on the how efficient channel estimation is, which directly impacts its bit error rate (BER). In this research work, the novel technique of pseudo-pilot aided OFDM system is used its channel estimation with least square (LS) and Recursive Least Squares (RLS) approach. In proposed technique, for channel estimation Pseudo-pilot technique is used in OFDM system over AWGN fading channels. A hybridization technique has been implemented to alleviate the error rate in the signals. The hybrid optimization approach is implemented on the estimated output for the optimum solution. The combination of the two optimization techniques is PSO (particle swarm optimization) and MFO (Moth Flame Optimization) method that is used for optimization of the performance rate. To get more optimum solutions (reducing BER) OFDM system is trained with neural network (NN). The performance of the proposed techniques and the weighted scheme are compared and verified using computerized simulation carried out using Matrix Laboratory (MATLAB) software. The hybrid approach is able to achieve low BER of the network. The BER of PSO is 1.004 x 10−7 whereas for hybrid optimization (PSO+MFO) BER is 6.275 x 10−8 at 18 dB SNR. After training of the whole system is done with BPNN which will further reduce the BER while increasing SNR. By using BPNN, BER will further reduce to 1.243 x 10−8 at 18 dB SNR. It means hybrid optimization is done to optimize the performance of the channel and reduce the BERs, which will help to increase the channel estimation process as well as channel capacity and further reduces the losses while transmission from one end to the other end.
The study of structural, optical and electrochromic properties of WO3:Co:Ni thin films deposited by spray pyrolysis
Authors: Dalenjan F. Azimi , Bagheri-Mohagheghi Mohammad 
Published: May 2022

Abstract
In this study, WO3: Ni (0at %, 10at %, 20at %, and 30at %) and WO3: Co20 at%: Ni (0%, 5%, 10%, 20%, and 30%) thin films were deposited on glass substrates by pyrolysis spray technique and then annealed at T = 500°C. For the preparation of thin films, the initial solution of 0.1 M tungsten oxide and the precursors of nickel sulfate and 6-hydrate cobalt chloride were used. After preparing thin films, the effect of the presence of Ni impurities on the structural, morphology, optical and electrochromic properties of WO3: Ni and WO3: Co 20 at% -Ni thin films was studied. The results of the X-ray diffraction showed that the structure of thin films after annealing has a polycrystalline structure with the combined phases of CoWO4, NiWO4, and W17O49 with monoclinic and hexagonal structures. As the amount of Ni impurities increases, the grain size of the WO3: Ni thin films increases and ranges from 8 to 36 nm. Also, for WO3 thin films: Co20 at%: Ni, the CoWO4 and NiWO4 phases have been seen and the grain size was in the range from 35 to 39 nm. The voltametric cycle diagrams of WO3: Ni and WO3: Co20at%:Ni thin films showed that the electrochromic behavior improves with increasing nickel impurity. The morphology of the thin films was studied by field emission electron microscopy (FESEM). Also, the energy band gap of thin films with the addition of nickel and cobalt impurities was calculated using UV-Vis diagrams. The energy gap is decreased for both WO3: Ni and WO3: Co (20%): Ni thin films.
Evaluation of platelet parameters as a marker of preeclampsia: A retrospective case-controlled study
Authors: Mansouri Nasrin , Azizi Ali , erfan Mohamaadbagher Khadem , BahramNikkhoo  , Amiri Amir , Shaveisi-Zadeh Jila , Rostami-Far Zahra 
Published: May 2022

Abstract
Introduction: Preeclampsia (PE) is characterized by proteinuria and gestational hypertension, and is a leading global cause of maternal mortality and perinatal morbidity. This study aims to investigate the diagnostic value of platelet indices, namely platelet count (PC), mean platelet volume (MPV), platelet distribution width (PDW), Platelet large cell ratio (P-LCR), platelet to lymphocyte ratio( PLR), and PC/MPV (PLM) in women with preeclampsia.Methods: Four groups were evaluated: Case group (n=50) including Sever preeclampsia (n=23), mild preeclampsia (n=16), hellp syndrome (n=11) and healthy control group (n=50). Using the same automated blood cell count, platelet parameters were collected. Statistical analysis was conducted by analysis of the variance, t-test, and receiver operational characteristics (ROC) curve. P≤0.05 was considered significant.Results: MPV, PDW, and RDW were significantly lower and HCT, RBC, PC, PLR, and PLM were significantly higher in the case group. Lower PLR was found in mild preeclampsia compare to severe. Conclusion. The AUC for PC, PLR, and PLM were considered as regular. Therefore, we can suggest that the patients with cut-off values of these parameters should be carefully followed for the development of PE
The point-of-care D-dimer test provides a fast and accurate differential diagnosis of Stanford Type A aortic syndrome and ST-elevated myocardial infarction in emergencies
Authors: Xiaoxin Chang , Jianhua Yao , Yawei Xu 
Published: May 2022

Abstract
Background: The research of the sensitivity and specificity point-of-care testing (POCT) of D-dimer as a diagnostic protocol for differential diagnosis of TAAS (hereafter as TAAS) mimicking ST-elevated myocardial infarction (STEMI) with regular STEMI in the emergency department is limited.Methods: Full medical information of 32 patients confirmed TAAS and 527 patients confirmed STEMI from January 1st, 2016 to October 1st, 2021 were retrospectively analyzed in Shanghai tenth People’s Hospital of Tongji University.Results: The baseline characteristics of two groups of patients were well-balanced post propensity score matching (PSM) analysis, and each group had 32 patients enrolled. Patients in the STEMI group had higher positive cardiac troponin I (cTNI) (0.174ng/mL vs. 0.055ng/mL, P=0.008) results but lower D-dimer (0.365ug/mL vs. 31.50ug/mL, P<0.001) results than the TAAS group. The AUC values were 0.998 (95% CI:0.993-1.000) for the D-dimer, and the D-dimer cutoff value of 2.155ug/mL had the best sensitivity of 100% and specificity of 96.9% in the TAAS group. No significant correlation between the D-dimer concentration and the time from symptom onset to first medical contact in both groups (TAAS group: r=-0.248, P=0.170; STEMI group: r=-0.159, P=0.383). The total in-hospital mortality for the patients with TAAS presenting as STEMI was 62.5% (20/32). The mortality rate for TAAS patients confirmed by CTA was significantly lower (40% vs. 82.4%, P=0.014) than the mortality rate for TAAS patients confirmed by CAG and had a longer average survival time (log-rank=0.015) but less peri-surgical complications, especially gastrointestinal hemorrhage (0.00% vs. 55.6%, P<0.001). CTA diagnosis can reduce the mortality rate by 67.5% (95%CI:0.124-0.850, P=0.16).Conclusions: The POCT D-dimer can exclude TAAS mimicking STEMI from regular STEMI prior to reperfusion therapy.
Assessment of the distribution and ecological risks of heavy metals in coastal sediments of Vietnam’s Mong Cai area
Authors: Loan Bui Thi Thanh , Nhon Dang Hoai , Ve Nguyen Dac , Luu Nguyen Thi Mai , Sieu Le Nhu , Hue Nguyen Thi , Vuong Bui Van , Nghi Duong Thanh , Nam Le Van , Dung Pham Tien , Anh Vo Thi , Anh Ha Lan , Dung Nguyen Thi Kim , Ha Nguyen Manh , Chien Nguyen Van 
Published: May 2022

Abstract
The Mong Cai area is located on the border between Vietnam and China, with the Ka Long River forming a natural border. Coastal sediments were collected and analyzed for grain size, heavy metal content, total organic carbon, and isotopes (210Pb, 226Ra, δ15N, δ13C) to assess sediment quality.Fine sand was common in surface sediment, with abundant very fine sand in core C1; in core C2, very coarse silt and coarse silt were dominant. The sedimentation rate at C1 ranged between 0.08 and 1.62 cm/year while that at C2 ranged between 0.07 and 0.51 cm/year. The total organic carbon was highest in C2 next to the surface and lowest in C1, with content levels of 1.81%, 0.40% and 0.31%, respectively. δ13C in surface sediments ranged from − 27.43 to -17.02‰ and averaged − 24.13‰; δ15N ranged from 3.12 to 6.05‰, with an average of 4.96‰; and δ13C and δ15N in the sediment reflected the source of the organic matter mix from the marine and terrigenous sediments.The sediments’ heavy metal contents were lower than ISQGs, with the exception that As in C1 and C2 was higher than the ISQG. The heavy metal distribution was highly concentrated in the Ka Long estuary with low concentration in Ha Coi Bay. The concentration in C1 showed a decline over time, while the Cu, Pb, Zn, Cr, Co, Ni, and Mn contents in C2 increased over time between 1996 and 2019. In terms of heavy metal pollution indexes, Igeo showed C1 and C2 to be unpolluted to moderately polluted with As, with Li and Pb in C2; EF was moderately enriched with As; CF was moderately contaminated (Pb, Cd, Fe, Mo, and Li) in C2 and in C1 (Cd, As, Li) and considerably contaminated (As) in C2. ER of As showed a moderate potential ecological risk in C2. CD ranged from moderate degree contamination to considerable degree contamination (C1, C2). RI had low ecological risks.
LINC01638 regulates miR-128/PDK1 to promotes cell proliferation and drug resistance in ovarian cancer
Authors: Ye Ying , Wang Hui 
Published: May 2022

Abstract
This study aims to explore the functional mechanism of LINC01638 in ovarian cancer (OC). The OC cell proliferation, viability and colony formation were respectively measured using CCK-8, MTT and colony formation assay. The cell cycle and apoptosis were both assessed using flow cytometry. Online bioinformatics tools were performed to predict the downstream gene of LINC01638. RNA pull down experiment and luciferase reporter assay were processed to verify the predictions. The expression of LINC01638, miR-128-3p and PDK1 in OC tissues and cells were detected using qRT-PCR and ISH analysis. The expressions of cisplatin-related proteins were determined by western blot. OC mice model was constructed to carry out in vivo experiment. LINC01638 was highly expressed in OC tissues and cells, and its high expression was related to poor OC prognosis. LINC01638 knockdown inhibited cell proliferation, colony formation and cisplatin resistance, promoted cell apoptosis and induced cell cycle arrest in OC cells. LINC01638 knockdown suppressed tumor growth, proliferation and cisplatin resistance and enhanced apoptosis in vivo. LINC01638 directly targeted miR-128-3p/PDK1 in OC cells. LINC01638 affected OC cell proliferation, survival and cisplatin resistance via combing miR-128-3p and promoting PDK1 expression.
Psychometric properties of the Persian version of the SCREENIVF among Persian infertile couples
Authors: Kargar Somaye Taghadosi , Elyasi Forouzan , Jahanfar Shayesteh , Peyvandi Sepideh , fallah behnoud , Aghmashhadi Fatemeh Yahya Poor , Hamzehgardeshi Zeinab 
Published: May 2022

Abstract
BACKGROUNDTo determine the face, content and construct validity of the Persian version of SCREENIVF for the infertile Iranian population.METHODSThis was a methodological study of the psychometric properties of SCREENIVF. This report describes process and principles used in translation and cultural adaption of SCREENIVF on 20 infertile couples.RESULTSDuring the process, cultural differences were quantified and taken into account. Results from qualitative face validity indicated that all items have equal or higher effect scores than 1.5(1.5 score effect), which shows the importance of these cases in infertile couples. In measuring the content validity ratio, all cases' scores were higher than 51% in Lawsche table (51% for 14 experts). The content validity ratio scores for all cases were equal or greater than 0.57, so items were identified as "essential". The entire instrument's internal correlation was estimated by using alpha Cronbach 0.89, which shows significant reliability. Results from construct validity represents that five factor structure of SCREENIVF has a good fit to the observe data.LIMITATIONSThe researchers must be aware of the culture-based constraints for data collected through the questionnaire. Therefore, further studies are highly recommended with the larger sample size.CONCLUSIONIt seems that the Persian version of SCREENIVF is valid and reliable and can be used to screen for emotional risk factors in infertile couples under treatment in infertility clinics in Iran.