bluuebunny/crossref_metadata_2025_split huggingface dataset:
Persepsi Petani terhadap Kinerja Penyuluh Pertanian Lapangan di BPP Babirik Kabupaten Hulu Sungai Utara
Authors: Munira Nove , Mariani Mariani , Husaini Muhammad 
Published: December 2024

Dalam kegiatan penyuluhan, kinerja penyuluh menjadi penting untuk menilai penyuluh yang berhasil dalam merubah pengetahun, sikap dan keterampilan petani dalam berusahatani. Dalammelakukan penilaian tersebut perlu diketahui pendapat atau persepsi petani. Persepsi adalah proses petani untuk memahami, merasakan, mendapatkan manfaat dan mampu menginterpretasikan apa yang disampaikan oleh penyuluh dalam berusahatani padi melalui indra yang dimilikinya. Penelitian ini bertujuan untuk mengetahui persepsi petani terhadap kinerja penyuluh pertanian dan untuk mengetahui faktor internal petani yaitu umur, pendidikan, kekosmopolitan, luas lahan, lama berusahatani dan faktor eksternal yaitu akses terhadap informasi, partisipasi dalam kegiatan penyuluhan yang mempengaruhi persepsi petani terhadap kinerja penyuluh di Kecamatan Babirik Kabupaten Hulu Sungai Utara. Sampel yang digunakan dalam penelitian ini sebanyak 47 petani dari populasi sebanyak 471 petani yang diambil dengan teknik acak. Hasil penelitian menunjukkan bahwa persepsi petani terhadap kinerja penyuluh pertanian lapangan di BPP Babirik signifikan termasuk dalam kriteria persepsi positif dengan indeks rata-rata sebesar 0,54. Faktor internal petani yaitu pendidikan formal petani dan luas lahan, serta faktor eksternal petani yang terdiri dari akses terhadap informasi dan partisipasi anggota kelompok tani signifikan mempengaruhi persepsi petani terhadap kinerja penyuluh. Sementara itu, faktor internal dan eksternal yang terdiri dari umur petani, pengalaman dalam berusahatani dan kekosmopolitan petani tidak signifikan mempengaruhi persepsi petani terhadap kinerja penyuluh tersebut.
KAJIAN AGRIBISNIS IKAN LELE (Clarias sp.) DI KECAMATAN BANJARBARU UTARA (STUDI KASUS PADA RUMAH TANGGA PERIKANAN BUDIDAYA BERRYBEE FISH N’ FARM)
Authors: Ningrum Rizka Anggun Sulistya , Azis Yusuf , Fatah Luthfi 
Published: December 2024

Ikan lele adalah salah satu komoditas perikanan yang banyak diminati masyarakat untuk dibudidayakan karena karakteristiknya dapat bertahan hidup di air yang keruh dan masa pemeliharaan yang relatif singkat yaitu tiga bulan. Salah satu rumah tangga perikanan (RTP) budidaya yang mengusahakan komoditas lele yaitu BerryBee Fish n’ Farm dengan sistem budidaya yang belum diterapkan oleh rumah tangga perikanan lain di Kota Banjarbaru yaitu Recirculating Aquaculture System. Oleh karena itu kajian agribisnis pada RTP BerryBee Fish n’ Farm menarik untuk diteliti. Penelitian ini bertujuan untuk mengetahui penyelenggaraan usaha, menganalisis besar biaya, penerimaan, keuntungan, titik impas, dan mengukur tingkat kelayakan usaha budidaya lele RTP BerryBee Fish n’ Farm serta mengukur nilai tambah produk pasca panen berupa ikan lele yang diawetkan. Penelitian yang berlokasi ditempat budidaya ikan lele RTP BerryBee Fish n’ Farm, Kecamatan Banjarbaru Utara, Kota Banjarbaru ini menggunakan metode studi kasus dengan data primer yang diperoleh dari wawancara dengan pemilik usaha dan observasi lapangan, serta data sekunder diperoleh dari studi pustaka serta beberapa instansi yang terkait dengan penelitian. Berdasarkan hasil penelitian, penyelenggaraan usaha RTP BerryBee Fish n’ Farm telah sesuai dengan prinsip aplikasi Recirculating Aquaculture System. Analisis dari sisifinansial menghasilkan kesimpulan bahwa usaha ini menguntungkan dan layak untuk terus dijalankan. Namun dari segi nilai tambah produk pasca panen masih tergolong kecil.
SPECIFIC OF THERMOHYDRAULIC CALCULATIONS OF CORE PRESSURIZED WATER SMALL MODULAR REACTORS IN CASE NATURAL CIRCULATION OF THE COOLANT
Authors: Konshin Valeriy , Kravchenko Pavlo 
Published: December 2024

The article has been devoted to the study of the main features of pressurized water small modular reactors and an analysis of the influence of the specified features on the thermohydraulic calculation of the core.
Special attention is given to small modular reactors with natural circulation of the coolant. It was determined that in the calculation of the core, natural circulation affects the determination of pressure losses and the heat transfer coefficient. When determining pressure losses, the difference between natural and forced coolant circulation lies in the components of pressure losses that need to be considered. In the determination of the heat transfer coefficient, the key factor is the determination of the Nusselt number, where the circulation flow regime affects determining criteria. The issue of determining the critical heat flow using the CHF LOOK UP TABLET method is also considered for the further determination of the departure from nuclear boiling, which serves to assess the safety of operation of the installation.
As an example, during the study, a thermohydraulic calculation of the core of the small modular reactor Holtec SMR-160, as one of the advanced representatives of this type of reactor, was performed. As a result of the conducted calculation, the value of pressure losses, the distribution of the heat transfer coefficient and the minimum departure from nuclear boiling were obtained. The study shows the departure from nuclear boiling obtained as a result of the calculation is close to the minimum allowable value, but it is quite acceptable considering the characteristics of natural coolant circulation. However, it necessitates further analysis during the assessment of the reactor facility's safety.
Implementation of Curcuma xanthorrhiza Roxb Encapsulation as a Feed Additive on Production Performance of Broiler
Authors: Dos Santos Abilio , Indrati Rositawati , Sjofjan Osfar 
Published: December 2024

The research aim to determine Curcuma xanthorrhiza Roxb encapsulated as a feed additive and its implementation on broiler production performance. The method used was a field experiment using a Completely Randomized Design (CRD), which consisted of 6 treatments and 4 replicates, namely; (P0-) negative control (commercial feed), (P1+) positive control (antibiotic 0.1%), P2 (C. xanthorrhiza encapsulation 0.25%), P3 (C. xanthorrhiza encapsulation 0.50%), P4 (C. xanthorrhiza encapsulation 0.75%) and P5 (C. xanthorrhiza encapsulation 1%). The results showed that the addition of temulawak (Curcuma xanthorrhiza Roxb) encapsulation in broiler feed can have a very significant effect (P < 0.01) on IOFC, a significant effect (P < 0.05) on body weight, feed conversion, and gives no significant effect (P>0.05) on feed consumption and carcass percentage. The use of temulawak (Curcuma xanthorrhiza Roxb) encapsulation at the level of 0.50% in broiler feed, numerically showed positive results on feed consumption, body weight gain, carcass percentage, IOFC and feed conversion. In conclusion, the addition of temulawak (Curcuma xanthorrhiza Roxb) encapsulated at the level of 0.50% in broiler feed is recommended as a feed additive to replace antibiotics because it tends to increase broiler production performance
Molecular Epidemiology of Streptococcus pneumoniae Serotype 1: A Systematic Review of Circulating Clones and Clonal Clusters
Authors: Ntim Onyansaniba K. , Donkor Eric S. 
Published: December 2024

Background: Streptococcus pneumoniae serotype 1 is one of the most prevalent serotypes commonly associated with invasive pneumococcal disease cases and outbreaks worldwide. Several sequence types of this serotype have been identified globally, including those exhibiting both virulence potential and antimicrobial resistance profiles. This systematic review presents the global distribution of clones of pneumococcal serotype 1, describing their circulating patterns in various regions in the world. Methods: A database search was conducted in Google Scholar, PubMed, Scopus, ScienceDirect, and Web of Science using keywords related to Streptococcus pneumoniae serotype 1. The inclusion criteria entailed peer-reviewed studies published in English describing the utilization of at least one molecular genotyping tool to identify S. pneumoniae serotype 1 clones based on their sequence types. Data extracted were managed and analyzed using Microsoft Excel 365. Results: Forty-three studies were finally included in the systematic review. A total of 103 MLST serotype 1 sequence types were identified in 48 countries. These clones were widely reported to be associated with invasive pneumococcal diseases. Globally, ST217 and ST306 clonal complexes (CC217 and CC306) were the predominant lineages of serotype 1 sequence types, exhibiting distinct continental distribution patterns. CC217 characterized by ST217, ST303, ST612, ST618, and ST3081 was predominant in Africa and Asia. ST306 clonal complex group into ST306, ST304, and ST227 were mostly found in Europe, Oceania, North America, and some countries in South America. ST615 was predominant in Chile, Peru, and Argentina. Conclusion: The hypervirulence nature of serotype 1 coupled with its complex genetic diversity, poses a significant public health threat. Consequently, our findings emphasize the need for enhanced surveillance and targeted interventions to mitigate the spread of these hypervirulent clones, ultimately informing evidence-based strategies for disease prevention and control.
Portable Solar-Integrated Open-Source Chemistry Lab for Water Treatment with Electrolysis
Authors: Antonini Giorgio , Rahman Md Motakabbir , Brooks Cameron , Santoro Domenico , Muller Christopher , Al-Omari Ahmed , Bell Katherine , Pearce Joshua M. 
Published: December 2024

Harnessing solar energy offers a sustainable alternative for powering electrolysis for green hydrogen production as well as wastewater treatment. High costs and logistical challenges of electrolysis have limited widespread investigation and implementation of electrochemical technologies on an industrial scale. To overcome these challenges this study designs and tests a new approach to chemical experiments and wastewater treatment research using a portable stand-alone open-source solar photovoltaic (PV)-powered station that can be located onsite at a wastewater treatment plant with unreliable electrical power. The experimental system is equipped with an energy monitoring data acquisition system. In addition, sensors enable real-time monitoring of gases: CO, CO₂, CH₄, H₂, H₂S, and NH₃, along with temperature, humidity, and volatile organic compounds, enhancing safety during electrochemical experiments on wastewater, which may release hazardous gases. SAMA software was used to evaluate energy-sharing scenarios under different grid-connected conditions and the system can operate off the power grid for 98% of the year in Ontario, Canada. The complete system has been tested utilizing a laboratory-scale electrolyzer (electrodes of SS316L, Duplex 2205, titanium grade II and graphite) with electrolyte solutions of potassium hydroxide, sulfuric acid and also secondary wastewater effluent. The electrolytic cell specifically developed for testing electrode materials and wastewater showed a Faraday efficiency up to 95% and an energy efficiency of 55% at STP demonstrating the potential for use of this technology in future work.
Endoscopic Para/transseptal Endonasal Approach for Pituitary Neuroendocrine Tumor Preserving Nasal Septal Mucosa; Procedure Tailored to Tumor Extension
Authors: Kino Hiroyoshi , Akutsu Hiroyoshi , Tanaka Shuho , Hara Takuma , Morinaga Yusuke , Miyamoto Hidetaka , Ii Rieko , Osawa Koutarou , Ishikawa Eiichi 
Published: December 2024

Abstract

Currently, the direct endonasal approach is widely used in endoscopic endonasal surgery (EES) for pituitary neuroendocrine tumor. However, a large posterior septal perforation is inevitable. We routinely utilize a modified para/transseptal approach using the combination of a Killian and a contralateral rescue flap incision (PTSA with K-R incision). Especially, rescue flap incision is used on ipsilateral side of the tumor extension to facilitate lateral expansion of the anterior sphenoidotomy and tumor resection. 189 patients underwent EES using PTSA with K-R incision in Tsukuba university hospital. Gross total resection (GTR) was achieved in 146 (77.2%) patients. Even in cases of significant lateral tumor extension (Knosp 3 or 4), GTR was achieved in 56 of 90 (62.2%) patients. Among the 168 patients with available rhinological follow-up data, postoperative anterior and posterior septal perforation occurred in six (3.6%) and 18 (10.7%) patients, respectively. Surgical intervention was required in one (0.6%) patient with anterior septal perforation. Thus, PTSA with K-R incision was effective in preserving the nasal septal mucosa on one side and gaining a sufficient surgical corridor with lateral expansion of the anterior sphenoidotomy on the other side. Our strategy may be preferable to improve maneuverability of instruments during tumor resection.
Enhancement of FK520 production in Streptomyces hygroscopicus var. ascomyceticus ATCC 14891 by overpressing the pathyway specific regulatory gene fkbR2
Authors: Xiao Xue , Gao Shuhong 
Published: December 2024

Abstract

Ascomycin (FK520) is a 23-membered macrolide antibiotic primarily produced by the Streptomyces hygroscopicus subsp. ascomycetoides. Structurally similar to tacrolimus and rapamycin, it serves as an effective immunosuppressant widely used in the treatment of rejection reactions following organ transplantation and certain autoimmune diseases. Currently, FK520 is mainly produced through microbial fermentation, but its yield remains low. Since the gene fkbR2 is a regulatory gene within the FK520 biosynthetic gene cluster that has not been studied, this paper focuses on the overexpression of the regulatory gene fkbR2 in Streptomyces hygroscopicus var. ascomyceticus ATCC 14891 (WT). By constructing a strain with overexpressed fkbR2 gene, we initially obtained a high-yielding strain R2-17 through shake flask fermentation, with a 28% increase in yield compared to WT. In the process of further improving the stability of the high-yielding strain, this paper defines two indices: high-yield index and stability index. After two consecutive rounds of natural selection, strain R2-17 achieved a high-yield index of 100% and a stability index of 80%, ultimately leading to the selection of a stable high-yielding strain R2-17-3-10 with a 34% increase in yield compared to WT, reaching 686.47 mg/L. A comparative analysis between the high-yielding strain R2-17-3-10 and the original strain WT revealed differences in fermentation process parameters such as FK520 synthesis rate, pH, bacterial concentration, glycerol consumption rate, amino nitrogen level, and ammonium ion concentration. Additionally, the transcription levels of genes involved in the synthesis of precursors DHCHC (fkbO), ethylmalonyl-CoA (fkbE, fkbU, fkbS), and piperidine acid (fkbL), as well as pathway-specific regulatory genes (fkbN, fkbR1), were significantly increased at different time points in the high-yielding strain R2-17-3-10. This suggests that the gene fkbR2may enhance the supply of FK520 synthetic precursors by regulating the transcription of these genes, thereby promoting an increase in FK520 production. These results demonstrate that modifying genes within the biosynthetic gene clusters of natural products can be successfully applied to increase the yields of industrially and clinically important compounds. However it is found that fkbR2 gene may be a regulatory gene that has not been fully studied, and it is worth further studying its regulatory mechanism.
Access to health services by women subjected to violence: findings from administrative healthcare data from the metropolitan area of northern Italy
Authors: Gabellini Eliana , Salvatori Andrea , Greco Maria Teresa , Cattaneo Cristina , Tambuzzi Stefano , Costantino Maria Antonella , Russo Antonio Giampiero 
Published: December 2024

Abstract

Background: In Italy, approximately 50% of women report experiencing episodes of psychological and/or physical violence. The Emergency Department (ED) is widely recognized as one of the health services to which victims of violence seek treatment for injuries and within which situations of domestic violence and abuse can be recognized. This work aims to estimate the phenomenon of violence in the population of the Health Protection Agency (ATS) of Milan using data from emergency room access and hospital admissions. A further goal of the survey is to provide evidence to launch audit processes in health units designed to foster improvement strategies for the management of the phenomenon and guarantee integration with anti-violence centers.
Methods: In the first phase of the project, an algorithm was designed to detect women subjected to violence intercepted in the five years 2019-2023 in the administrative healthcare data of emergency rooms and hospital admissions. To identify the cases, the specific diagnosis codes of the ICD-9 have been selected. Prevalence and time trends of the phenomenon were estimated, stratifying by different socioanagraphic characteristics and by types and attributes of access.
In addition, the degree of integration between social and health services was analyzed. The areas researched concern intake by specialized services; specifically, data on female residents of the cohort were cross-referenced with data on access to the network of social health services in the ATS territory.
Results: A clearly increasing phenomenon emerges: from 2019 to 2023, admissions to the ED have risen by 17%. A total of 35.6 percent of admissions involve women between the ages of 18 and 34. Foreigners account for approximately 40.9 percent of the cohort while constituting 15 percent of women residing in the territory. The yellow (Urgency) triage code is assigned for 3 out of the 4 admissions. A total of 11.5% of women had multiple accesses.
Conclusions: Administrative healthcare data offer consistent data for studying the phenomenon of violence. This project aims to provide useful tools to better guide policies for intervention and integration between services in the area. Further reflection will focus on the possibility of integrating health and social services to support an intersectoral approach.
Efficacy of Online Conscious Connected Breathwork in Reducing Symptoms of Anxiety: A Quantitative Study
Authors: Blake Richard Lawrence 
Published: December 2024

Abstract

Amidst the growing prevalence of anxiety disorders and the limitations of existing treatments, this research paper posits that we need to expand treatment options rather than simply to include more people in therapy or on medication. The popularity of breathwork has grown enormously but is still in the process of creating a robust body of evidence to validate its utility. This research employs a true-experimental design to compare pretest and posttest measures of anxiety utilizing the Zung Self-Rating Anxiety Scale (ZAS) between a breathwork group and a control group. The breathwork group participated in six weekly group sessions, each lasting 90 minutes, while the control group was placed on a waitlist. The study’s results are significant with a large effect size, as CCB reduced anxiety symptoms by a mean of 10.56 points on the ZAS compared to the control group’s reduction of just 1.89. This substantial difference highlights the potential of CCB as an effective, low-cost, and accessible intervention for anxiety. Furthermore, this study pioneers the investigation of the effectiveness of CCB in an online environment, offering insights into the adaptability and potential broader application of breathwork therapies. This research supports the integration of CCB into mainstream mental health practices, addressing the increasing demand for effective mental health treatments.
Influence of Base Stock Group to Molecular Structure and Tribological Performance
Authors: Zhao Zifei , Yang Jie , Tian Boxi , Wang Weiwei 
Published: December 2024

Abstract

Base stock composition and molecular structure has an important effect on tribology properties of lubricating oil. In this paper, five different groups of base stocks were taken as the research objects, the composition and structural parameters have been detected by GC-MS and NMR, the friction coefficient and wear scar width of base stocks at different temperatures are evaluated by ring-block friction and wear testing machine, the morphology, composition elements of the friction surfaces were studied by optical microscope and EDS-SEM. Results show that Group I and Group II base stock mainly composed of paraffins containing unsaturated hydrogen and cycloparaffin, and the Group IV PAO base oil prepared by α-olefin were mainly composed of saturated alkanes molecules with regular carbon chains. The highly branched molecules dominates in mineral base stock. Group II base stock shows the lowest friction coefficient and the Group III shows the highest value. After adding MoDTC, Group I base stock shows the highest friction coefficient, other base stock show similar low friction coefficient. The PAO produced with ethylene oligomerization method shows the largest wear scar whenever mixed with MoDTC. Apart from 1# Group I base stock, the XNP of ethylene produced PAO is the lowest compared with other lubricants, this indicates that a low XNP value of base stock may lead to poor anti-wear performance, although the normal paraffin is harmful to the low temperature fluidity of lubricants.
Analysis of chicken feed ingredient handling and feed compounding on commercial farms and feed mills in selected districts of Uganda
Authors: Nampanzira Dorothy K. , Kizza Daniel , Okello Samuel , Kayemba Vincent , Awino Winfred , Nabulime Margret , Isiko Joshua , Nakabugo Immaculate , Nalubwama Sylvia , Twinamatsiko Robert 
Published: December 2024

Abstract

Adequate chicken feed in terms of quantity and quality are foundations of successful chicken production. A cross sectional survey was conducted in 10 districts of Uganda. Data was collected on socio demographic characteristics, feedstuffs used in chicken feed production, seasonal availability of feedstuffs, mixing of feed stuffs, challenges faced in chicken production and perception of chicken producers and feed millers on feeds quality. Results revealed that 54.7% of the farmer respondents were female, while 62.7% of the feed miller respondenst were male. Broiler birds followed by layers and kroilers were the major type of chicken reaed by both groups of respondents. White maize and maize bran were the major energy sources while fishmeal was the main protein source in chicken diets. About 59.7% of the producers used commercially compounded feeds while 71.4 of the millers used self-compounded feeds. Gender significantly influenced methods used to check for quality, particularly asking fellow farmers (X2 = 4.01, P<0.0045). Education significantly influenced the understanding of good quality feed among the farmers. Farmers that had attained a high level of education, understood quality as no foul smell (X2=9.72, P<0.017). Unstable prices and low quality of feeds and feed ingredients were the major feeds challenges faced by the respondents. Organoleptic tests and farmer peer-to-peer information sharing were the major methods used to check the quality of feeds. Quality chicken feed meant different things to producers and millers. Both producers and millers were aware of Feed and feed ingredients adulteration.