bluuebunny/crossref_metadata_2025 huggingface dataset:
ĐÁNH GIÁ MỨC ĐỘ HÀI LÒNG TRONG CÔNG VIỆC CỦA 827 NHÂN VIÊN Y TẾ ĐANG CÔNG TÁC TẠI BỆNH VIỆN TRUNG ƯƠNG QUÂN ĐỘI 108
Authors: Đào Thị Thúy Ngọc , Lê Thị Quế
Published: June 2023

Mục tiêu: Đánh giá mức độ hài lòng trong công việc của nhân viên y tế đang công tác tại Bệnh viện Trung ương Quân đội 108.
Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang 827 nhân viên y tế đang công tác tại Bệnh viện Trung ương Quân đội 108, từ 01/7/2022 đến 31/8/2022.
Kết quả: Nhân viên y tế tham gia nghiên cứu hầu hết phân bố từ 21-60 tuổi (99,8%); tỉ lệ nam giới (66,5%) nhiều hơn nữ giới (33,5%); đa số thuộc biên chế hoặc hợp đồng dài hạn và ngắn hạn (96,0%); có thời gian công tác trong ngành y từ 6 năm trở nên (83,0%); có trình độ đại học và cao đẳng (70,0%). Công tác chuyên môn của nhân viên y tế nghiên cứu phân bố trên lĩnh vực cận lâm sàng là 29,5%; lĩnh vực nội khoa 27,2% và ngoại khoa 18,1%. Đánh giá sự hài lòng chung của nhân viên y tế về khả năng tiếp cận, về lãnh đạo trực tiếp và đồng nghiệp, về quy chế nội bộ, tiền lương, phúc lợi xã hội, về công việc, cơ hội học tập và thăng tiến và về bệnh viện đều ở mức tương đối hài lòng, với mức điểm trung bình lần lượt đạt 4,3/5 điểm, 4,39/5 điểm, 4,27/5 điểm, 4,32/5 điểm và 4,49/5 điểm.
NGHIÊN CỨU ỨNG DỤNG CÔNG NGHỆ GIẢI TRÌNH TỰ THẾ HỆ MỚI TRÊN HỆ GENE VI KHUẨN BURKHOLDERIA PSEUDOMALLEI
Authors: Lê Thị Bích Trâm
Published: June 2023

Mục tiêu: Bổ sung một kĩ thuật mới trong định danh vi khuẩn B. pseudomallei bằng công nghệ giải trình tự gene thế hệ mới.
Đối tượng và phương pháp: Ứng dụng kĩ thuật giải trình tự gene thế hệ mới trên hệ thống máy MiSeq (Illumina - Hoa Kỳ), giải trình tự toàn bộ hệ gene của hai chủng vi khuẩn B. pseudomallei. Đánh giá chất lượng giải trình tự gene bằng phần mềm FastQC. Định danh vi khuẩn bằng trình tự 16S rRNA sử dụng phần mềm Blast.
Kết quả: Phần mềm FastQC cho thấy điểm chất lượng Q đạt trên Q30 (độ chính xác của đọc trình tự là trên 99,9%), chỉ số N50 của hai chủng vi khuẩn là 36.559 bp và 74.123 bp. Phần mềm Blast cho kết quả ở cả 2 chủng vi khuẩn là B. pseudomallei với độ bao phủ và độ tương đồng đều đạt 100%. Trình tự kiểu gene (ST) được xác định là ST 541, với kiểu alen của các “house-keeping” genes là ace: 3, gltB: 4, gmhD: 2, lepA: 3, lipA: 5, narK: 4 và ndh: 1. Sử dụng công cụ ABRicate, gene kháng kháng sinh beta-lactam được xác định ở cả hai chủng. Sử dụng cơ sở dữ liệu VFDB, xác định được 165 gene độc lực ở chủng NTW 21.1 và 171 gene độc lực ở chủng SS 1 240’.
Hubungan Status Gizi dan Anemia pada Ibu dengan Kejadian BBLR di RSUD Dr. R. Soedjono Selong
Authors: Siti Naili Ilmiyani  , Yusuf Nurlathifah N. , Aprianti Nurannisa Fitria
Published: June 2023

Background: In terms of mortality of 60-80% of neonatal deaths caused by low birth weight, because the lbw 20 times higher risk of death in infancy. Malnutrition and anemia lead to low birth weight. The number of pregnant women anemia in bantul regency (36.6%) and nutritional status are event numbers (4.9 percent). Objective : This research is a survey research study design with analytic case control. The sample in this research is an experienced maternity mother lbw and not lbw as much as 246 cases, groups of cases (lbw) 123 and 123 cases of the control group. Analysis of the data used is the test of chi square and multivariate analysis with multiple linear regrasi. Methods: Analysis of the results obtained, that there is no significant relationship between nutritional status with the incident with the highest p 0,236 low birth weight and there is no significant relationship between anemia and lbw with the occurrence value p 0,290. Result :There is no relationship of nutritional status and anemic, but the nutritional status and risk factors for the onset of anemia is a low-value odds ratio 2,070 on nutritional status and 1,324 for anemia. Conclusion: More expectant mothers are expected to be improved again in an effort to consume fe tablets for didn't happen anemia and increased nutritional needs during pregnancy to prevent low birth weight.
Hubungan Tingkat Pengetahuan dan Lingkungan Remaja dengan Kesehatan Akibat Perilaku Mengkonsumsi Minuman Keras di Desa Lendang Tampel
Authors: Nagib Muh , Azmi Muhammad Ulul
Published: June 2023

Minuman keras adalah minuman yang mengandung etanol yang dapat menyebabkan penurunan kesadaran bagi yang mengkunsumsinya, dan dapat menyebabkan gangguan kesehatan fisik seperti gangguan pada hati, pancreas, resiko kanker esophagus, lambung, usus besar, dan paru-paru, dan jantung. Tujuan penelitian adalah utuk mengetahui hubungan tingkat pengetahuan tentang bahaya minuman keras terhadap kesehatan dan lingkungan remaja dengan perilaku mengkonsumsi minuman keras di Desa Lendang Tampel Kecamatan Batukliang Lombok Tengah. Penelitian ini menggunakan metode analitik korelasi dengan pendekatan cross sectional. Data yang dikumpulkan dengan menggunakan kuesioner. Populasi adalah remaja yang berasal dari Desa Lendang Tampel tahun 2019 yang berjumlah 675 orang. Sampel diambil dengan tehnik purposive random sampling berjumlah 169 orang. Uji statistik yang dilakukan adalah univariat dan bivariat dengan tingkat kemaknaan α= 0,05. Hasil analisa univariat menunjukan pengetahuan baik sebanyak 97 orang (57,9%), berpengetahuan cukup 23 orang (13,2%), dan berpengetahuan kurang sebanyak 49 orang (28,9%). Dan diketahui lingkungan baik sebanyak 72 orang (42,1%), dan lingkungan tidak baik sebanyak 97 orang (57,9%). Dan perilaku mengkonsumsi minuman keras sebanyak 97 orang (52,6%), dan tidak mengkonsumsi minuman keras sebanyak 80 orang (47,4%). Analisa chi-square diperoleh hubungan tingkat pengetahuan tentang bahaya minuman keras terhadap kesehatan dan lingkungan dengan perilaku mengkonsumsi minuman keras dengan nilai signifikan  p value = 0,000 <0,05. Penelitian ini disimpulkan bahwa ada hubungan antara tingkat pengetahuan dan dan lingkungan remaja dengan kesehatan akibat perilaku mengkonsumsi minuman keras di Desa Lendang Tampel Kecamatan Batukliang Lombok Tengah.
Pengaruh Pemberian Air Kelapa Muda Hijau dan Rebusan Daun Alpukat terhadap Penurunan Tekanan Darah pada Lanjut Usia dengan Hipertensi
Authors: Muliani  , Maruli Taufandas  , Saifurrahman  , Muh. Jumaidi Sapwal
Published: June 2023

ABSTRAK

Salah satu gangguan yang sering muncul padalanjut usia adalah hipertensi. di indonesia di perkirakan bahwa penduduk yang terserang hipertensi sebanyak 1,8-2,86 %. Penderita hipertansi dapat di berikan air kelapa muda hiaju dan rebusan daun alpukat yang banyak sekali manfaatnya diantaranya daoat menurunkan tekanan darah. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian air kelapa muda hijau dan rebusan daun alpukat terhadap penurunan tekanan darah pada lansia yang menderita hipertensi. Jenis penelitian ini menggunakan pre ekperimen ,dengan rancangan pree tes dan post test.lokasi penelitian di dusun dasan tiga wilayah kerja puskesmas dasan lekong. Dalam penelitian ini sampel yang di gunakan dalam penelitian ini sebanyak 36 orang. Uji statistik menggunakan ui t-test dan one way anova dengan taraf signifikan 0,491 artinya ada pengaruh pemberian air kelapa muda hijau dan rebusan daun alpukat terhadap penurunan tekanan darah pada lansia dengan hipoertensi. Berdasarkan hasil penelitian ini peneliti menyarankan kepada tenaga kesehatan agar menerapkan pemberian air kelapa muda hijau dan rebusan daun alpukat sebagai salah satu tindakan untuk menurunkan tekanan darah.

Kata Kunci : Air Kelapa Muda Hijau Dan Rebusan Daun Alpukat , Hipertensi, Lansia ABSTRACT

One of the disorder that elderly is hypertension.in indonesia it is estimated that the population suffering from hypertension is 1,8 to 2,86 %. Patients with hypertension can be given green young coconut water and avocado leaf stew which has many benefits including it can lower blood pressure. The purpose of this study was to deter mine the effect of giving green young coconut water and avocado leaf decoction on reducing blood pressure in eldrly suffering from hypertension and the type of this research is pre experiment with pree test and post test design. The researchlocation is in dasan tiga hamlet of east sukamulia village with a population of 206 people who suffer from elderly people aged 60 to 80 years. This study used a sample of 36 people. The results of statistical using the t-test and one way anova to a significant degree 0,491 it means that there is an effect of giving green young coconut water and avocado leaf decoction on the reduction of blood pressure in elderly suffering from hypertension.Based on the result of this study, the research ers advised health workers to apply the provision of green young coconut water and avocado leaf stew as an action to lower blood presure.

Keywords : Green Young Coconut Water And Avocado , Hypertension , Elderly
The Effect of Aging and Different Surface Treatments on Temporary Cement Bonding of Temporaray Crown Materials
Authors: FINDIK AYDINER Sebahat , YANIKOĞLU Nuran , YEŞİL DUYMUŞ Zeynep
Published: June 2023

Objective: The purpose of this research was to determine the effect of different surface treatments and aging on the bond strength of different temporary restorative materials with temporary cements.

Methods: 252 temporary crown materials 2 mm thick with a 10 mm diameter were prepared. No surface treatment was administered to the control group. 4% hydrofluoric acid gel was administered to one of the other groups and sandblasted to the other. Two types of temporary cement were used. After a 5000-cycle thermal cycle was administered to half of the materials, cement bond strengths were measured.

Results:It was found that the material used, the type of cement, the aging treatment, the material*aging treatment, and the material-cement interaction (p
Evaluating The Knowledge, Awareness and Exposure of Dentists in Conscious Sedation In Relation to Their Current Practice and Future Expectations
Authors: HAMZAH Siti Zaleha , MOHD Farah Natashah
Published: June 2023

Introduction: Conscious sedation in dentistry becoming more popular in Malaysia nowadays. However, the knowledge ,exposure and practice of conscious sedation in dental setting has rarely been explored. Therefore, this study aimed to evaluate the knowledge awareness and exposure of Malaysian dentists about conscious sedation for dentistry and their association with sociodemographic profile. Materials and Methods: A cross-sectional study using an online questionnaire (Qualtrics@ Software) was conducted among Malaysian registered dentists. Questions on sociodemographic profile, knowledge, awareness, exposure and practice on conscious sedation were collected. Chi square test was used to analyse the associated factors for knowledge, exposure and practice. Result: A total of 166 respondents completed the survey, resulting in response rate of 43.1%. Majority agreed that conscious sedation is beneficial in allaying dental anxiety and knows at least 3 types of CS. More than half had been exposed in inhalation sedation (IS) with less than half had CS exposure during undergraduate (UG). However, only a quarter practicing CS in their dental practice. Discussion: Malaysian dentists were familiar with the indications of CS in dentistry which corroborates with other studies. Meanwhile, the exposure to CS during undergraduate study were dependant on the availability and the program structure. Conclusion: Majority of respondents know, but only some are practicing oral and inhalation sedation. Only a few of respondents know about other types of CS. Thus, there is a need for more exposure and training of CS during undergraduate to cater the need of patients with dental anxiety.
Evaluation of Surface Roughness and Microhardness of New Generation Bulk-Fill Composites
Authors: SÜSGÜN YILDIRIM Zehra , SONKAYA Ezgi , BEK KÜRKLÜ Zeliha Gonca
Published: June 2023

Objectives: The main objective of the study was to evaluate and compared the surface roughness and microhardness of three bulk-fill (ACTIVA Bioactive Restorative, SonicFill 2 SingleFill and SDR Flow Plus) and one conventional (G-aenial Posterior) composite resin at different depths.

Materials and Methods: Eighty disc-shaped composite resins (6mm diameter, 2mm height) were polymerized as recommended and then subjected to the appropriate finishing and polishing procedure. Transparent strips were placed between the samples before polymerization to evaluate the hardness at different depths (0-2mm and 2-4mm) of the bulk-fill composites. Microhardness was evaluated with a Vickers hardness tester and roughness was evaluated with an optical profilometer. The ANOVA and Tukey multiple comparisons were performed for the statistical evaluation of microhardness and ANOVA was performed for roughness.

Results: No statistically significant difference was determined between the composite materials in respect of surface roughness (p=0.336). It was generally observed that as the layer thickness increased in all the materials, the hardness values decreased (p
Percepção dos alunos da escola de design da Universidade do Estado de Minas Gerais (ED-UEMG) quanto à mudança de sede do Campus da Pampulha para a praça da liberdade
Authors: De Medeiros Marcelo Lemos , De Oliveira e Silva Leonardo Bráulio , Gamarano Daniel de Souza , Dias Victória Carolina Pinheiro Lopes , De Miranda Carlos Alberto Silva , Tavares Paulo Henrique Campos Prado
Published: June 2023

O presente artigo apresenta um estudo realizado com a comunidade acadêmica da Escola de Design (ED) a respeito da mudança da sede, do campus Pampulha para a praça da Liberdade, sendo esta a quarta transferência ao longo de sua história, ocorrida em 2020. A ED UEMG se destaca no cenário nacional pela qualidade dos profissionais e por ser um dos cursos mais representativos de Minas Gerais. Para a realização dessa análise, alunos e colaboradores participaram de um questionário online com a ferramenta Google Docs, sendo as questões estruturadas de modo a promover uma pesquisa exploratória sobre a mudança da sede. De maneira geral, os resultados demonstram que a mudança é considerada positiva pela comunidade entrevistada. Essa análise foi realizada pelos alunos matriculados na disciplina de Estatística Aplicada à Pesquisa em Design ofertada em 2018 aos alunos da Pós-graduação em Design (Mestrado e Doutorado).
Percepção sobre o acompanhamento da aplicação dos recursos municipais por parte de discentes do campus avançado de Patu/RN
Authors: Dias Sanailton de Lima , Da Silva Kennedy Paiva , Morais Maria Auxiliadora de Oliveira , Da Silva Taynara Milene , De Moura Rosalynn Rebouças , Martins Joana Darc Medeiros , de Sousa Neto Pedro Balduino , De Souza Rafael Demetrius Rodrigues
Published: June 2023

Este trabalho consiste num estudo sobre a percepção de alunos, de um Curso de Ciências Contábeis, no acompanhamento da aplicação dos recursos públicos municipais. Além disso, objetiva demonstrar como o cidadão pode contribuir para uma gestão mais eficiente, que iniba os gastos indevidos, diminuindo, assim, o índice de corrupção, visto que o acesso à informação é um direito previsto pela Constituição Federal. O estudo é desenvolvido com  base numa metodologia de pesquisa exploratória, qualitativa e interpretativista, em  que a coleta dos dados realizou-se através de um questionário, aplicado aos discentes do Curso de Ciências Contábeis, do Campus Avançado de Patu da UERN. O trabalho teve a seguinte fundamentação teórica: Constituição Federal (1988), Medeiros e Pereira (2003), Pires (2002), Capiberibe (2013), dentre outros. A partir de uma comparação e confrontação de dados coletados entre os períodos iniciais e períodos finais do Curso, os resultados demonstram que os discentes dos períodos iniciais concordam parcialmente, enquanto os dos períodos finais mostram nulidade em relação à fiscalização das contas públicas; por outro lado, aprovam a disponibilidade da informação, em tempo real, como requisito para a fiscalização da gestão.  No entanto, com relação à habitualidade e acompanhamento dos recursos, nota-se uma neutralidade e discordância parcial dos discentes. Por fim, os índices médios apontam para a neutralidade dos discentes iniciais, em relação a possibilidade deles contribuírem para inibir as compras superfaturadas, enquanto os períodos finais concordaram parcialmente.
Physical Rehabilitation of Patient with Infrarenal Section Abdominal Aortic Aneurysm Presenting with Hydrocele and Inguinal Hernia: A Case Report
Authors: Kotian Dhanush , Ashok Abeeshna
Published: June 2023

Infrarenal Abdominal Aortic Aneurysm (AAA) is an abnormal dilation of distal abdominal aorta. The risk factors are age older than 60 years, smoking, hypertension and caucasian ethnicity. Testicular pain is an uncommon clinical presentation. There is a high prevalence of inguinal hernia in patients with infrarenal AAA. The purpose of the present case report is to describe the functional activity limitation in a patient affected by an infrarenal AAA presenting as a symptom of inguinal hernia and groin pain despite successful infrarenal AAA repair with aortofemoral bypass surgery and bilateral inguinal hernia repair. A 62-year-old male patient, presented with pain in the groin region and mild swelling over the scrotal region, which was severely limiting his activities of daily living. A Computerised Tomography (CT) angio abdomen revealed a fusiform aneurysm on the distal abdominal aorta and a saccular aneurysm of bilateral common iliac arteries. Given the minimum of four days of referral waiting time to receive treatment for infrarenal AAA, the patient underwent surgery and was followed by the postoperative physiotherapy intervention. The rehabilitation programme started five days postsurgery. The treatment goals directed mainly decreasing postoperative pulmonary complications and improving functional mobility. The present case report contributes new light on the possible pathogenesis and timely management. It reports the unexpected and unusual presentation of the disease and unveiling the link between the presentation of infrarenal AAA and inguinal hernia and hydrocele.
Utilization of Digital Tools: Critical Analysis of College and University Professors in Tamilnadu
Authors: Kumar C. Ashok , Kayalvizhi R.
Published: June 2023

It is generally known that digital technologies play an important role in the digital age. Hence, there is a need to close the gap in digital device accessibility and expand opportunities to access technology to create equality. However, this creates a significant problem: students’ failure to understand how to use such technology in the learning process. The adoption of online-based learning and the Internet has had a positive impact on students and faculties [1].

The present study aims to analyze the level of utilization of digital tools by college and university professors in Tamilnadu. This study designed a survey method with simple random sampling from the selected population. The investigator prepared and standardized a digital utilization scale to assess the level of utilization of digital tools by the professors of colleges and universities. The percentage analysis, ‘t-test, ANOVA, and Pearson Product Moment correlation were made for this study. The findings of the study were: 1. There will be a significant outcome in the utilization of digital tools by college and university professors concerning question-wise. 2. There will be a significant interaction in the utilization of digital tools of college and university professors concerning the teaching experience. 3. There will be a significant interaction in the utilization of digital tools between college and university professors concerning the designation. The study demonstrated that the utilization of digital tools is very essential for today's technological world. So, the government, curriculum framers, private NGOs and stakeholders must give more priority to these digital tools in the future.
The Effect of Inoculum Size and Medium Volume on Methionine Production by Bacillus species EZ-13 and ZM-10
Authors: Okpalla Jude
Published: June 2023

The effect of inoculum size and medium volume on methionine production by Bacillus species EZ- 13 and ZM-10 was studied. The methionine-producing bacteria had already been isolated from within Anambra State University (now Chukwuemeka Odumegwu Ojukwu University), Uli campus Anambra State. They were purified and identified as Bacillus species EZ-13 and ZM-10 using cultural and biochemical characteristics. Thereafter, they were used to evaluated the influence of inoculum size and medium volume on methionine production by Bacillus species EZ-13 and ZM-10 in 250 ml flasks containing 50 ml of sterile fermentation medium. The findings revealed that Bacillus species EZ-13 and ZM-10, at inoculum size of 4% v/v, recorded maximum methionine yields of 2.8 mg/ml and 2.1 mg/ml respectively. The methionine concentrations of both Bacillus species decreased beyond inoculum size of 4% v/v. The medium volume of 50 ml stimulated maximum methionine yield of 3.0 mg/ml in Bacillus species EZ-13 and 2.4 mg/ml in Bacillus species ZM-10. The methionine concentrations for both bacteria decreased beyond medium volume of 50 ml. The result of the study showed that varying the inoculum sizes and medium volumes, could influence methionine yield by fermentation.
Genetic Variability, Heritability and Genetic Advance Studies in Field Pea (Pisum sativum L.) for Yield and its Attributing Traits
Authors: Varma D. Dinesh , Kant Ravi , Nilanjaya  , Vennela M.
Published: June 2023

An investigation was carried out with 48 genotypes of pea obtained through line x tester mating and were tested using a randomized block experimental design with three replications. The result showed a highly significant difference for all the 14 characters under study. The variability, heritability and genetic advance as percent mean were studied for all the characters. A high genotypic coefficient of variation was observed for the traits number of secondary branches, plant height, number of pods per plant, harvest index, nodules fresh weight and nodules dry weight. High heritability coupled with high genetic advance estimates was recorded for the number of secondary branches, plant height, pod length, number of seeds per pod, number of pods per plant, 100 seed weight, grain yield per plant, harvest index, nodules fresh weight and nodules dry weight indicating the role of additive gene action and selection for these traits could be reliable.
Detection of Rice Blast Disease (Magnaporthe grisea) Using Different Machine Learning Techniques
Authors: Chakraborty Bidisha , Banerjee Santanu , Samanta Sanjoy , Debangshi Udit , Yadav Sandhya V. , Khaire Pravin B. , Shelar Vaibhav B. , Bansode Govardhan D. , Landage Kiran B.
Published: June 2023

Rice is one of the most important staple food crops in the world. Most Asian countries are dependent on rice and huge quantities of rice are grown every year. However, there are many categories of diseases (e.g., blast) which affect rice production and can ultimately lead to huge financial loss to rice growers. Yield loss due to rice blast disease about 10 to 30 percent annually and under favourable condition, this disease can destroy the rice plant within 15 to 20 days and cause yield loss up to 100%.Therefore to ensure better quality, quantity and better productivity early disease detection should be done so that the right amount of pesticides can be as administered at right time to curb the infection. Nowadays Machine Learning has been integrated into the agriculture sector. The aim of this review paper is to identify which Machine Learning algorithms work best in rice blast disease detection. The algorithms reviewed here include Naive Bayes, LSTM RNN, Random Forest Classifiers, Support Vector Machines, K Means, Decision Tree and Convolutional Neural Networks. This review paper also covers the future scope of improvement of some Machine Learning algorithms like Naive Bayes and Recurrent Neural Networks.
Identifying and Analyzing the Technical Challenges of Grid Tide Inverters for PV System: A Case Study of Ethiopia and Zambia
Authors: Endalamaw Redate Shawell
Published: June 2023

Zambia and Ethiopia are two countries from southern and eastern of Africa due to their geographical location and other factor the environment condition is different. The research aims at identifying and analszing the technical performance issues of Grid tide Inverter (GTI) for PV system due to operating climate and others factors. In Zambia the study focused on the two main solar plants which is under ZESCO national grid at malty facility zone (MFZ), the first one is the 54 megawatts Bangweulu solar power plant by Neon Investment of France, second one is 34MW Ngonye solar photovoltaic (PV) plant. In Ethiopia eight min off-grid site under Ethiopian Electric Utility(EEU) is included. Beltu, Behima, Mino, Ungoge,  Korhele,Tum, Omorate and Kofetu. A survey is conducted focusing on identifying and analyzing the technical performance issues of GTI in the above-mentioned area.

Using Microsoft excel the environmental \climate condition, Solar radiation, Air temperature, Rain falls and Wind of the two country Zambia and Ethiopia is investigated and analysedfor each selected site. A questionnaire and a Sime structure interview is conducted. The basic inverter challenges are investigated from the collected data and the problem is analyzed based on the specific inverter data sheet. The data sheet of the inverter for each site under this study.

Finally, the real-time performance of the inverter of the off-grid PV mini-grid system installed in a small remote town in Ethiopia and on-grid PV system from Zambia at multi facility zone is analysed using measured meteorological data. From on- grid and off-grid inverter performance challenges, which the researcher collected from different plant the main ones are climate or environmental effect and also over load. Overload is one of the frequent challenges in koftu, behama and amorita this can be due to high population growth and unexpected power demand from the community. 

Environmental condition affects almost all solar plant site which is under this study. If we compere the climate of east which is Addis Ababa Ethiopia and southern of Africa Zambia Lusaka. The temperature of Lusaka is higher than Addis Ababa by 5.63°C and even in the plant under this study, temperature rise is one of the challenges on the inverter performance, sensitive electronic component bent due to excessive temperature.

On the other side in Ethiopia Addis Ababa excessive rain affect the inverter. Finally, Addis Ababa has about 1.32 times more rainfall than Lusaka, (Addis Ababa’s 79.54mm vs Lusaka’s average of 60.34mm). For that reason, most of the inverter in Ethiopia on the mini off-grid site are affected by heavy rain condition.
Human tau E14 Mutation Induced Neurodegeneration in Drosophila melanogaster is Ameliorated by Developmental Supplement of Ashwagandha Root Extract
Authors: Murthy Mamatha Nagamadhu , Shyamala Baragur Venkatanarayanasetty
Published: June 2023

Withania somnifera (L.) Dunal (WS) known as Ashwagandha, has been used for centuries in Ayurvedic medicine to promote longevity and vitality. The use of herbal plant extract in treating several diseases has been documented from the very beginning in Ayurveda. The ethnopharmacological properties of this ‘‘Indian Ginseng’’ plant include adaptogenic, hypnotic, sedative, and diuretic. The root extract of WS has shown the properties of neuronal regeneration by stimulating axon and dendrite outgrowth in neurons in culture. Hence, in the recent decade Ashwagandha has been widely studied for its neuroprotective properties in many rodent models and cell lines. Here, we have used transgenic Drosophila model carrying human tauE14. The mutant protein codes for pseudophosphorylated Tau protein which is specifically expressed in photoreceptor neurons using GMR-Gal4 driver to induce photoreceptor neuronal degeneration. We treated these tauopathy mimicking flies with different concentrations of Ashwagandha to evaluate the neuroprotective/remedial effect of Ashwagandha at different stages of fly development. Our results demonstrated that Ashwagandha can rescue the neurodegeneration phenotype in Drosophila TauE14 disease model only when administered during development.
Influence of FDI on China's Green Marine Economy
Authors: Xinyue Yu , Jifeng Zhang , Zirui Yang , Luxue Liang
Published: June 2023

China attaches great importance to the protection of Marine resources, the development of Marine economy and the construction of a maritime power. FDI is highly concentrated in China's coastal areas and accompanied by space spillover, which affects the development speed and quality of Marine economy. Does FDI improve the efficiency of China's Marine green economy? Based on the panel data of 11 coastal provinces and cities in China from 2004 to 2020, the "efficiency evaluation system of Marine green economy" is constructed from the dual perspective of environmental constraints and resource conservation, considering the unexpected output and measuring the efficiency of Marine green economy with the ultra-efficiency SBM model. Then, under the geographical weight and economic geographical weight, the FDI spatial index is constructed to study its influence on the efficiency of Marine green economy. The results show that FDI space can improve the efficiency of Marine green economy in China. FDI has a negative effect on the efficiency of Marine green economy, but after considering the spatial factors, the FDI spatial index has a positive promotion effect on the improvement of the efficiency value, and the promotion effect is more significant under the weight of economic geography and space.
Clinical feasibility of a commercially available MRI‐only method for radiotherapy treatment planning of the brain
Authors: Ranta Iiro , Wright Pauliina , Suilamo Sami , Kemppainen Reko , Schubert Gerald , Kapanen Mika , Keyriläinen Jani
Published: June 2023

Background

Advancements in deep‐learning based synthetic computed tomography (sCT) image conversion methods have enabled the development of magnetic resonance imaging (MRI)‐only based radiotherapy treatment planning (RTP) of the brain.

Purpose

This study evaluates the clinical feasibility of a commercial, deep‐learning based MRI‐only RTP method with respect to dose calculation and patient positioning verification performance in RTP of the brain.

Methods

Clinical validation of dose calculation accuracy was performed by a retrospective evaluation for 25 glioma and 25 brain metastasis patients. Dosimetric and image quality of the studied MRI‐only RTP method was evaluated by a direct comparison of the sCT‐based and computed tomography (CT)‐based external beam radiation therapy (EBRT) images and treatment plans. Patient positioning verification accuracy of sCT images was evaluated retrospectively for 10 glioma and 10 brain metastasis patients based on clinical cone‐beam computed tomography (CBCT) imaging.

Results

An average mean dose difference of Dmean = 0.1% for planning target volume (PTV) and 0.6% for normal tissue (NT) structures were obtained for glioma patients. Respective results for brain metastasis patients were Dmean = 0.5% for PTVs and Dmean=1.0% for NTs. Global three‐dimensional (3D) gamma pass rates using 2%/2 mm dose difference and distance‐to‐agreement (DTA) criterion were 98.0% for the glioma subgroup, and 95.2% for the brain metastasis subgroup using 1%/1 mm criterion. Mean distance differences of <1.0 mm were observed in all Cartesian directions between CT‐based and sCT‐based CBCT patient positioning in both subgroups.

Conclusions

In terms of dose calculation and patient positioning accuracy, the studied MRI‐only method demonstrated its clinical feasibility for RTP of the brain. The results encourage the use of the studied method as part of a routine clinical workflow.
Experimental Analysis of the Stability of Retained Austenite in a Low‐Alloy 42CrSi Steel after Different Quenching and Partitioning Heat Treatments
Authors: Liehr Alexander , Wegener Thomas , Degener Sebastian , Bolender Artjom , Möller Nico , Niendorf Thomas
Published: June 2023

Quenching and partitioning (Q&P) steels are characterized by an excellent combination of strength and ductility, opening up great potentials for advanced lightweight components. The Q&P treatment results in microstructures with a martensitic matrix being responsible for increased strength whereas interstitially enriched metastable retained austenite (RA) contributes to excellent ductility. Herein, a comprehensive experimental characterization of microstructure evolution and austenite stability is carried out on a 42CrSi steel being subjected to different Q&P treatments. The microstructure of both conditions is characterized by scanning electron microscopy as well as X‐ray diffraction (XRD) phase analysis. Besides macroscopic standard tensile tests, RA evolution under tensile loading is investigated by in situ XRD using synchrotron and laboratory methods. As a result of different quenching temperatures, the two conditions considered are characterized by different RA contents and morphologies, resulting in different strain hardening behaviors as well as strength and ductility values under tensile loading. In situ synchrotron measurements show differences in the transformation kinetics being rationalized by the different morphologies of the RA. Eventually, the evolution of the phase specific stresses can be explained by the well‐known Masing model.
Enhanced Embedding of Cations into Titanium Surfaces by AC Plasma Electrolytic Oxidation for Osteointegrated Implants
Authors: Martinelli Sara , Pavarini Matteo , Moscatelli Monica , Steeves Alexander J. , Chiesa Roberto , Variola Fabio
Published: June 2023

Titanium and its alloys represent the gold standard for osteointegrated implants, but their characteristic bioinertness still hinders their optimal integration within the host tissues. This limitation can be overcome by introducing osteoinductive functionalities on their surface. Plasma electrolytic oxidation (PEO) has emerged as a cost‐effective and rapid electrochemical method for generating bioactive titanium dioxide (TiO2) coatings, but the incorporation of pro‐osteogenic cations with this technique is typically passive and, in turn, characterized by a low efficiency. Here, alternate current (AC) PEO is investigated as a flexible solution to incorporate zinc into TiO2 coatings by exploiting the active transport of cations during the cathodic phase of the process. The resulting microporous surfaces show a greater zinc incorporation and an increased presence of rutile domains compared to conventional direct current (DC) PEO coatings, without, however, yielding significant morphological differences. In vitro assays with human mesenchymal stem cells (hMSCs) reveal an increased metabolic activity of cells adhering onto AC PEO surfaces. In addition, the increased expression of osteogenic differentiation markers (RUNX2 and osteocalcin) indicates significant surface‐driven osteoinductive effects, particularly for coatings grown by applying a short cathodic spike. Taken together, these aspects make Zn‐doped AC PEO surfaces a promising solution for osteoinductive orthopedic and dental applications.
Mucoadhesive Phenolic Pectin Hydrogels for Saliva Substitute and Oral Patch
Authors: Choi Soojeong , Jeon Jihoon , Bae Yunsu , Hwang Yongsoon , Cho Seung‐Woo
Published: June 2023

Oral disease is one of the most common conditions worldwide, negatively affecting general health, reducing the quality of life, and often developing into systemic illness. However, the design of therapeutic agents for oral diseases is challenging due to various unique features of the oral cavity, including its wet and dynamic environment and curved shape. Herein, the development of highly biocompatible mucoadhesive functional hydrogels for oral applications is reported, generated by introducing bio‐inspired phenolic moieties into a pectin polymer. Pyrogallol‐functionalized pectin (Pec‐PG) can be crosslinked in situ via autoxidation without chemical agents and readily fabricated as various formulations. Sprayable Pec‐PG hydrogel exhibits strong mucoadhesion and outstanding hydration ability ex vivo and in vivo, thus displaying significant potential as a novel saliva substitute for dry mouth. The authors further show that topical application of mucoadhesive Pec‐PG patches pre‐loaded with corticosteroid significantly promotes the repair of diabetic oral ulcer tissue via prolonged drug release, free radical scavenging, and physical barrier effects. Moreover, similar applications for oral ulcer treatment using a pectin hydrogel modified with catechol (Pec‐CA), another phenolic moiety are demonstrated. Together, these findings suggest that mucoadhesive phenolic pectin derivatives can provide highly biocompatible, convenient, and effective hydrogel platforms for treating oral diseases.
Stretchable PU@CNT/MXene Fiber Fabricated by External Tension for High Performance Strain Sensor and Supercapacitor
Authors: Hou Keheng , Shi Xin , Yuan Junge , Zhang Ding , Bai Yangshuo , Xu Jie , Guo Fengmei , Zhang Yingjiu , Cao Anyuan , Shang Yuanyuan
Published: June 2023

Fiber‐based electronic devices can be woven into textiles to provide comfort, durability, and integrated multi‐functionality, and will be widely used in the intelligent wearable field. Herein, by introducing elastic substrates and regulating the external tension during spinning to control the helical structure and optimize mechanical properties, multi‐functional Polyurethane@carbon nanotube (PU@CNT) stretchable fibers with high extensibility and flexibility is prepared for human motion detection and energy storage. A multi‐layered structure consisting of alternating MXene sheets and CNT films is also designed, to promote the relative resistance change of PU@CNT/MXene fibers to 212% (4 times than PU@CNT) when acting as strain sensors, whereas their volume specific capacitance reaches 196 F cm−3 (increases ≈50 times). Additionally, the capacitance of our stretchable fibers supercapacitors maintains at 91.4% and 86.2% when stretched statically (170% strain) or after hundreds of cycles (50% strain), respectively. It is proposed that MXene sheets can fill gaps between CNTs, resulting in more uniform distribution in fibers, which can improve strain sensitivity and long‐cycle capacitance retention. These PU@CNT/MXene fibers with unique multi‐layered hybrid structure and superior performance have potential applications in portable, wearable, and body‐integrated sensors and energy storage devices.
Improving Linewidth and Extinction Ratio Performances of Lithium Niobate Ring Modulator Using Ring‐Pair Structure
Authors: Hou Songyan , Hu Hao , Xing Weichuan , Liu Zhihong , Zhang Jincheng , Hao Yue
Published: June 2023

Electro‐optic modulators lie at the heart of complex integration and high‐density electro‐optic systems. One of the representative electro‐optic modulators is thin‐film lithium niobate‐based microring modulator which has demonstrated advantages of compact footprint, low optical loss, and high modulation efficiency. However, the linewidth and extinction ratio of ring modulators are fundamentally limited by the ring losses and coupling, respectively. To this end, a novel type of electro‐optic modulators with ring‐pair structure on thin‐film lithium niobate platform is proposed, which brings substantial improvement of linewidth and extinction ratio. The ring‐pair modulator exhibits a larger linewidth up to 22 GHz, 1.74 times larger than that of the single‐ring resonator with same design parameters. Moreover, the experimental results also reveal that the added‐up extinction ratio of ring‐pair resonator goes beyond 30 dB, much larger than that in an individual ring resonator. These advantages of ring‐pair modulators pave a new way for the application of compact ring‐based modulators with large working wavelength window and high extinction ratio, to be exploited in quantum optics, programmable nanophotonics and optical sensors, etc.
Sulfidation Impacts on the Hydrophobicity of Stepped Iron Surfaces
Authors: White Jessica Jein , Hinsch Jack Jon , Wu Zhenzhen , Tian Yuhui , Bennett William W. , Wang Yun
Published: June 2023

Nanoscale zero‐valent iron (nZVI) has demonstrated high potential for the remediation of contaminated groundwater. Its lifetime is directly related to the hydrophobicity of nZVI. A promising approach to enhance the lifetime of nZVI is through sulfidation. Herein, the density functional theory (DFT) is applied to understand the impact of sulfidation on the hydrophobicity of stepped Fe surfaces. Adsorption properties of sulfur (S) at different coverages on the flat Fe(110) and stepped Fe(210) and Fe(211) surfaces are investigated. Sulfur has the stronger adsorption at a low surface coverage due to limited S–S repulsion. At the highest coverage (⊖ = 1 ML) on Fe(210) and Fe(211), the atoms at the step edges catalyze the formation of iron sulfides. The DFT results show surface hydrophobicity is mainly determined by the S coverage. At the low S coverage, the surface may become more hydrophilic due to the enhanced adsorption strength of water on the surface. However, an increase in the S coverage can efficiently block water adsorption, which is further evidenced by ab initio molecular dynamics (AIMD) results. The findings show that controlling S coverages is essential to engineer the hydrophobicity of nZVI surfaces for practical water remediation applications.
Disrupted Brain Functional Status in Patients with Reversible Cerebral Vasoconstriction Syndrome
Authors: Wu Chia‐Hung , Hsu Tun‐Wei , Lai Kuan‐Lin , Wang Yen‐Feng , Fuh Jong‐Ling , Wu Hsiu‐Mei , Lirng Jiing‐Feng , Wang Shuu‐Jiun , Chen Shih‐Pin
Published: June 2023

Objectives

The aim of this study was to investigate the functional networks in subjects with reversible cerebral vasoconstriction syndrome (RCVS) using resting‐state functional magnetic resonance imaging (rs‐fMRI).

Methods

We prospectively recruited patients with RCVS and healthy controls (HCs) between February 2017 and April 2021. The rs‐fMRI data were analyzed using graph theory methods. We compared node‐based global and regional topological metrics (Bundle 1) and network‐based intranetwork and internetwork connectivity (Bundle 2) between RCVS patients and HCs. We also explored the associations of clinical and vascular (ie, the Lindegaard index, LI) parameters with significant rs‐fMRI metrics.

Results

A total of 104 RCVS patients and 93 HCs were included in the final analysis. We identified significantly decreased local efficiency of the left dorsal anterior insula (dAI; p = 0.0005) in RCVS patients within 30 days after disease onset as compared to HCs, which improved 1 month later. RCVS patients also had increased global efficiency (p = 0.009) and decreased average degree centrality (p = 0.045), clustering coefficient (p = 0.033), and assortativity values (p = 0.003) in node‐based analysis. In addition, patients with RCVS had increased internetwork connectivity of the default mode network (DMN) with the salience (p = 0.027) and dorsal attention (p = 0.016) networks. Significant correlations between LI and regional local efficiency in left dAI (rs = −0.418, p = 0.042) was demonstrated.

Interpretation

The significantly lower local efficiency of the left dAI, suggestive of impaired central autonomic modulation, was negatively correlated with vasoconstriction severity, which is highly plausible for the pathogenesis of RCVS. ANN NEUROL 2023;94:772–784
Simultaneous Hydrogen Generation and Exciplex Stimulated Emission in Photobasic Carbon Dots
Authors: Fang Jiawen , Wang Yiou , Kurashvili Mariam , Rieger Sebastian , Kasprzyk Wiktor , Wang Qingli , Stolarczyk Jacek K. , Feldmann Jochen , Debnath Tushar
Published: June 2023

Photocatalytic water splitting is a promising approach to generating sustainable hydrogen. However, the transport of photoelectrons to the catalyst sites, usually within ps‐to‐ns timescales, is much faster than proton delivery (∼μs), which limits the activity. Therefore, the acceleration of abstraction of protons from water molecules towards the catalytic sites to keep up with the electron transfer rate can significantly promote hydrogen production. The photobasic effect that is the increase in proton affinity upon excitation offers means to achieve this objective. Herein, we design photobasic carbon dots and identify that internal pyridinic N sites are intrinsically photobasic. This is supported by steady‐state and ultrafast spectroscopic measurements that demonstrate proton abstraction within a few picoseconds of excitation. Furthermore, we show that in water, they form a unique four‐level lasing scheme with optical gain and stimulated emission. The latter competes with photocatalysis, revealing a rather unique mechanism for efficiency loss, such that the stimulated emission can act as a toggle for photocatalytic activity. This provides additional means of controlling the photocatalytic process and helps the rational design of photocatalytic materials.
Apparent and true mineralization during combined electro‐oxidation and electro‐coagulation on stainless steel anode
Authors: Meena Vinod Kumar , Ghatak Himadri Roy
Published: June 2023

Present study is a novel attempt to experimentally verify that electrochemical treatment of organic pollutants on stainless steel (SS) anode is a combination of electro‐oxidation (EO) and electro‐coagulation (EC) with quantitative estimation of individual contributions of the two mechanisms. Target organic pollutants, metformin HCl (MET‐HCl) and lamotrigine (LAM), were electrochemically treated with SS anode for this purpose. Experiments were designed using central composite rotatable design (CCRD) to assess the effect of current density (CD) and supporting electrolyte concentration (SEC) as independent process parameters. Under all conditions, the process was experimentally verified to be a combination of EO and EC. For MET‐HCl, true mineralization (TM) as a result of EO contribution varied between 50.13% and 66.64%. EO contribution and resulting TM for LAM ranged from 37.5% to 61.83%. EC contributed 30.6%–31.84% towards MET‐HCl remediation causing the TOC to be transferred from the liquid to the sludge produced (SP). EC contribution was 23.68%–35.89% for LAM remediation. Thus, apparent mineralization (AM), the sum of EO and EC contributions, ranged from 80.63% to 97.79% for MET‐HCl and 61.18% to 96.82% for LAM.

Process parameters were statistically optimized using response surface methodology (RSM) to simultaneously maximize TM and AM with minimal energy consumption and maximal current efficiency. The optimized conditions were 0.83 mA/cm2 CD and 86.66 ppm SEC for MET‐HCl. The corresponding values were 1.31 mA/cm2 CD and 79.51 ppm SEC for LAM.
High performance biopolymer blend nanocomposites derived from cashew gum/polyvinyl alcohol/boehmite for flexible electronic devices
Authors: Meera K. , Arun K. , Ramesan M. T.
Published: June 2023

This work reports on a bio‐based polymer blend comprised of polyvinyl alcohol/cashew gum (PVA/CG) embedded with boehmite nanoparticles to tailor the structural, thermal, mechanical properties, and electrical response. The chemical bonding between boehmite and the PVA/CG blend was confirmed by FTIR. The XRD data showed that the nanocomposite films had distinct peaks of boehmite. The SEM images revealed uniformly dispersed morphology at 5 wt% boehmite. The elemental composition of blend nanocomposites was revealed by the EDX analysis. The thermal stability of the blend increases with increasing boehmite, whereas the glass transition temperature decreases. The highest AC conductivity was achieved for PVA/CG/7 wt% boehmite, which was 4.6 times greater than the pure blend. The frequency and temperature‐dependent dielectric constant, modulus and impedance of all films were examined in conjunction with different nanoparticle loadings. Tensile strength and hardness have improved with the addition of boehmite into the PVA/CG blend whereas the elongation at break slightly decreases. The PVA/CG blend had a tensile strength of 31.17 MPa, which increased to 44.66 MPa when 7 wt% boehmite was added. Therefore, eco‐friendly PVA/CG/boehmite films with good thermal stability, mechanical strength, dielectric constant, and conductivity could be a practical green substitute for flexible electronic, charge storage, and electrochemical devices.