bluuebunny/crossref_metadata_2025 huggingface dataset:
Catalytic Pyrolysis of Waste Plastics over Industrial Organic Solid-Waste-Derived Activated Carbon: Impacts of Activation Agents
Authors: Qian Kezhen , Tian Wenmin , Li Wentao , Wu Shutong , Chen Dezhen , Feng Yuheng
Published: December 2022

Renewable source-derived carbon is found to be a green alternative catalyst to zeolite for the pyrolysis of plastics. However, only polyethylene (PE) catalytic pyrolysis over biomass-derived carbon has been extensively studied. In this work, carbon was produced from industrial organic solid waste using different activation agents, and their catalytic performance on the thermal degradation of typical polymers, namely PE, polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET) were investigated. The degradation mechanisms and the roles of different active sites of the carbons are discussed. Steam failed to activate the carbon, which has a low specific surface area (6.7 m2/g). Chemical activation using H3PO4 and ZnCl2 produces carbons with higher specific surface area and more porosity. The pyrolysis characteristics of LDPE, PP, PS, and PET catalyzed by the carbons were studied using TGA and a fixed-bed reactor. The thermogravimetric results indicate that all three carbons reduce the pyrolysis temperature. The analysis of the products shows that the P- and Zn-involved acid sites on the AC-HP and AC-ZN change the reaction pathway of plastics and promote: (1) C-C cracking and aromatization of polyolefins; (2) the protonation of phenyl carbon of PS to yield higher benzene, toluene, and ethylbenzene; and (3) the decarboxylation of the terephthalic acid intermediate of PET, resulting in higher CO2 and benzene. In addition, the high-value chemicals, long-chain alkylbenzenes, were found in the liquids of AC-ZN and AC-HP. The long-chain alkylbenzenes are probably formed by acid-catalyzed alkylation of aromatic hydrocarbons. This study provides basic data for the development of a cheap catalyst for plastic pyrolysis.
Supervised Machine Learning Classification for Short Straddles on the S&P500
Authors: Brunhuemer Alexander , Larcher Lukas , Seidl Philipp , Desmettre Sascha , Kofler Johannes , Larcher Gerhard
Published: December 2022

In this paper, we apply machine learning models to execute certain short-option strategies on the S&P500. In particular, we formulate and focus on a supervised classification task which decides if a plain short straddle on the S&P500 should be executed or not on a daily basis. We describe our used framework and present an overview of our evaluation metrics for different classification models. Using standard machine learning techniques and systematic hyperparameter search, we find statistically significant advantages if the gradient tree boosting algorithm is used, compared to a simple “trade always” strategy. On the basis of this work, we have laid the foundations for the application of supervised classification methods to more general derivative trading strategies.
Effects of Kettlebell Load on Joint Kinetics and Global Characteristics during Overhead Swings in Women
Authors: Watts Cullun Q. , Boessneck Kirsten , Riemann Bryan L.
Published: December 2022

This study sought to identify the changes in ankle, knee, and hip joint kinetics with increasing load while performing the kettlebell overhead swing (OHS). Women (n = 18, age: 29.4 ± 5.3 years, 69.7 ± 8.9 kg) with a minimum of 6 months of kettlebell swing training experience performed fifteen repetitions of the kettlebell OHS with three different kettlebell masses (8 kg, 12 kg, 16 kg) in a counterbalanced order. Ankle, knee, and hip joint kinematics were captured within a 12-camera infrared motion capture space, while standing atop two force plates collecting ground reaction force (GRF) data. Post hoc results of statistically significant joint by mass interactions (p < 0.05) of the net joint moment impulse, work, and peak power revealed the hip demonstrating the greatest increase in response to load, followed by the ankle (p < 0.05). The knee joint kinetics changed very little between the masses. Pairwise post hoc comparisons between the joints at each mass level support the kettlebell OHS as being a hip dominant exercise, with the knee making the second largest contribution, despite contributions not changing across kettlebell masses. Collectively, these results provide practitioners with objective evidence regarding the mechanical demands and effects of load changes on the kettlebell OHS.
A First-Tier Framework for Assessing Toxicological Risk from Vaporized Cannabis Concentrates
Authors: Vreeke Shawna , Faulkner David M. , Strongin Robert M. , Rufer Echoleah
Published: December 2022

Vaporization is an increasingly prevalent means to consume cannabis, but there is little guidance for manufacturers or regulators to evaluate additive safety. This paper presents a first-tier framework for regulators and cannabis manufacturers without significant toxicological expertise to conduct risk assessments and prioritize additives in cannabis concentrates for acceptance, elimination, or further evaluation. Cannabinoids and contaminants (e.g., solvents, pesticides, etc.) are excluded from this framework because of the complexity involved in their assessment; theirs would not be a first-tier toxicological assessment. Further, several U.S. state regulators have provided guidance for major cannabinoids and contaminants. Toxicological risk assessment of cannabis concentrate additives, like other types of risk assessment, includes hazard assessment, dose–response, exposure assessment, and risk characterization steps. Scarce consumption data has made exposure assessment of cannabis concentrates difficult and variable. Previously unpublished consumption data collected from over 54,000 smart vaporization devices show that 50th and 95th percentile users consume 5 and 57 mg per day on average, respectively. Based on these and published data, we propose assuming 100 mg per day cannabis concentrate consumption for first-tier risk assessment purposes. Herein, we provide regulators, cannabis manufacturers, and consumers a preliminary methodology to evaluate the health risks of cannabis concentrate additives.
Accumulation of Metals in the Environment and Grazing Livestock near A Mongolian Mining Area
Authors: Bataa Bayartogtokh , Motohira Kodai , Dugar Delgermurun , Sainnokhoi Tsend-Ayush , Gendenpil Lkhamjav , Sainnokhoi Tserenchimed , Pelden Bolormaa , Yohannes Yared Beyene , Ganzorig Sumiya , Nakayama Shouta M. M. , Ishizuka Mayumi , Ikenaka Yoshinori
Published: December 2022

The Mongolian economy is supported by rich deposits of natural resources, such as copper, coal, and gold. However, the risk of heavy metal pollution to livestock and human have been recently discussed. This research collected various samples from soil and animal (sheep, goat, horse, cow, and camel), blood and organs (kidney and liver) in the Mongolian countryside. These samples were processed, and the concentration of metals was quantified using inductively coupled plasma-mass spectrometry (ICP/MS). As previously reported, arsenic was found at high levels of accumulation in soil. Selenium is another concern, as median concentration in one area exceeded the maximum allowable level. Cadmium and selenium were found to be highly accumulated in animal kidney. This research revealed the current pollution level in Mongolia based on evaluation of soil and animals. The concentration in animals could not indicate that animals had severe effects because of heavy metal exposure. However, kidney is eaten in Mongolia, and so there is a direct connection to human health, and this research suggested the possible risks posed by each edible animal. In particular, evaluation of metals in livestock is rare in Mongolia. This result can contribute to animal and human health in Mongolian communities.
The Contribution of Charged Bosons with Right-Handed Neutrinos to the Muon g − 2 Anomaly in the Twin Higgs Models
Authors: Liu Guo-Li , Zhou Ping
Published: December 2022

We examine the charged boson and right-handed neutrino contribution to the muon g−2 anomaly in twin Higgs models with joint constraints of Higgs global fit data, precision electroweak data, leptonic flavor-changing decay μ→eγ, and the mass requirement of heavy-gauge bosons. It comes with the conclusion that some parameters, such as the coupling of charged Higgs to the lepton yμ, the top Yukawa yt, and heavy-gauge boson coupling to the lepton Vμ are constrained roughly in the range of 0.12≲yμ≲0.4, 0.4≲yt≲0.9, and 0.47≲Vμ≲1, respectively.
Competencias digitales y el síndrome de burnout en docentes de la UGEL El Collao
Authors: Alave Pari Gregorio
Published: December 2022

El manejo y destreza en el uso de las competencias digitales para los docentes es un factor relevante en el padecimiento del síndrome de burnout. Por ello, la investigación persigue relacionar las competencias digitales y el síndrome de burnout en docentes de 2do grado de nivel primaria de la UGEL El Collao. En el caso de las competencias digitales se usó un cuestionario adaptado de Rangel (2015) de 20 preguntas y para el síndrome de burnout se empleó el instrumento denominado Maslach Burnout Inventory (MBI-ES) basado en las autoras Maslash y Jackson (1981) conformado por un total de 22 ítems aplicados a 30 docentes del 2do. grado del nivel primaria. Se evidenció una asociación significativa entre el nivel de competencias digitales de los docentes y el síndrome de burnout. En definitiva, existe una interdependencia entre las competencias digitales docentes y dicho síndrome.
Pengaruh Teknologi Informasi, Kemampuan Pengguna Dan Budaya Organisasi Terhadap Kualitas Sistem Informasi Akuntansi (Studi Kasus Pada Badan Keuangan Dan Aset Daerah Kabupaten Bandung Barat)
Authors: Rachmanto Adi , Aditama Yogi Riyan
Published: December 2022

This study aims to determine information technology, ability of users and organizational culture to the quality of accounting information systems. The questionnaires were distributed as many as 30 questionnaires and all of them were re-entered in data processing. The method used in this research is descriptive and verification method with a quantitative approach. The source of data in this study is primary data with data collection techniques carried out by surveys using questionnaires. The analytical method used in this research is Structural Equation Modeling (SEM) through Partial Least Square (PLS) approach using SmartPLS 2.0 software. The results of this study indicate that Information Technology, Ability of Users and Organizational Culture affect the Quality of Accounting Information Systems.
Cosine Similarity untuk Mengukur Tingkat Kesadaran pada Topik Software Security Berbasis Teks Komentar di Media Sosial Youtube
Authors: Lahitani Alfirna , Aesyi Ulfi Saidata , Wulandari Noviana , Santosa Bagas Dwi
Published: December 2022

Kecenderungan peningkatan celah keamanan siber pada kelemahan perangkat lunak akan mengancam kerahasiaan, integritas, dan keamanan tidak hanya secara infrastruktur tetapi dapat meyerang secara psikologis. Menurut survey APJI 2020 sebagian masyakarat hanya merasa aman saat beraktivitas di internet dan menjalankan software namun kurang peduli bahwa ancaman bisa saja datang tanpa disadari. Apakah kesadaran akan keamanan beraktivitas di internet dan menjalankan software telah diketahui oleh sebagian besar masyarakat indonesia. Kesadaran akan keamanan siber khususnya pada area CyBOK Software Security menjadi perhatian bagi para pengguna, sebagian besar aktivitas siber menggunakan software. Kurangnya edukasi akan kesadaran membuat tidak sedikit para pengguna menjadi korban dari celah keamanan siber. Penelitian ini bertujuan melakukan analisis data berbasis teks pada 100 komentar pengguna di sosial media Youtube untuk mengukur tingkat kesadaran terhadap keamanan siber pada topik software security. Data teks dikolektif, dibersihkan dan ditransformasi menjadi term sehingga siap digunakan untuk proses pembobotan. Pembobotan term menggunakan metode TF-IDF, selanjutnya dilakukan pengukuran derajat kemiripan pada topik software security menggunakan Cosine Similarity. Hasil analisis divisualisasi dalam bentuk derajat awareness yang memodelkan tingkat kesadaran pengguna pada topik software security. Hasil pengukuran menunjukkan 98% pengguna pada kategori “kurang aware”, 2% pengguna pada kategori “cukup aware”.
A DISTRIBUTED ALGORITHM FOR PROTEIN IDENTIFICATION FROM TANDEM MASS SPECTROMETRY DATA
Authors: ORZECHOWSKA Katarzyna , RUBEL Tymon , KURJATA Robert , ZAREMBA Krzysztof
Published: December 2022

Tandem mass spectrometry is an analytical technique widely used in proteomics for the high-throughput characterization of proteins in biological samples. Modern in-depth proteomic studies require the collection of even millions of mass spectra representing short protein fragments (peptides). In order to identify the peptides, the measured spectra are most often scored against a database of amino acid sequences of known proteins. Due to the volume of input data and the sizes of proteomic databases, this is a resource-intensive task, which requires an efficient and scalable computational strategy. Here, we present SparkMS, an algorithm for peptide and protein identification from mass spectrometry data explicitly designed to work in a distributed computational environment. To achieve the required performance and scalability, we use Apache Spark, a modern framework that is becoming increasingly popular not only in the field of “big data” analysis but also in bioinformatics. This paper describes the algorithm in detail and demonstrates its performance on a large proteomic dataset. Experimental results indicate that SparkMS scales with the number of worker nodes and the increasing complexity of the search task. Furthermore, it exhibits a protein identification efficiency comparable to X!Tandem, a widely-used proteomic search engine.
Venture vs Investment, Which Type of Financing was more Demanded by Agriculture, Forestry, and Aquaculture Sector?
Authors: Iman Achmad Nur , Kusuma Wardhana Akhmad , Rusgianto Sulistya , Ratnasari Ririn Tri
Published: December 2022

COVID-19 creates uncertainty on business. SMEs in Indonesia need to take a loan to survive. Sharia banks could give credit financing based on Islamic law. This study has a purpose to observe if the total value of credit financing issued by sharia bank in Indonesia affects the total financing of agriculture, forestry, and aquaculture sectors.  This study uses secondary data taken from ojk.co.id as the sample. The independent variable is credit financing use for capital venture and investment. Dependent variables are the total financing in the agricultural, forestry, and aquaculture sectors. Data is analyzed using the linear regression method. The data of each variable was also tested using a T-test to analyze if there were significant changes during the COVID-19 pandemic.  Result showed that financing of capital venture has a moderate impact on the total of credit financing for agriculture and forestry sector, while investment is none. Moreover, the COVID-19 pandemic has no effect in changing the number of credits issued by sharia banks nor credit received by agriculture, forestry, and aquaculture sectors. Sharia bank implemented two pillars of maqashid, which are the protection of life and wealth in issuing credit financing. The total of credit issued by sharia banks in Indonesia affected Agriculture & forestry sectors for capital, but not for investment. Sharia bank implemented two pillars of maqashid, which are the protection of life and wealth in issuing credit financing
The Role of Financial Literacy on the Financial Performance with Financial Behavior as a Mediation (Case Study on Creative Industry Startups in Malang)
Authors: Iswari Hanif Rani
Published: December 2022

Abstract

Malang is one of the cities that are still in the 10 Creative Cities in Indonesia. The growth development of creative industry startups in Malang is very rapid considering the many supporting factors such as the number of demographics of productive age, market potential as far as support infrastructure, so that it is interesting to investigate further, especially regarding financial performance which is influenced by financial literacy. The purpose of this study is to investigate the role of financial literacy on the financial performance of creative industry startups in Malang. The research approach used is quantitative using smart PLS. The findings of this study are that financial knowledge has a significant positive effect on financial performance, as well as financial attitude has a significant positive effect on financial performance. In addition, financial behavior plays a role in mediating between financial knowledge on financial performance and financial attitude on financial performance.

 

Keywords: financial literacy, financial knowledge, financial attitude, financial behavior, financial performances, creative industry, creative economy.
Improvement of Hygiene and Sanitation in Fish Traders Group of Kedonganan Fish Market Toward Healthy Market
Authors: Permatananda Pande Ayu Naya Kasih , Pandit I Gde Suranaya , Cahyawati Putu Nita
Published: December 2022

Most traditional markets in Indonesia do not meet the Healthy Market requirements as stipulated in the Ministry of Health Regulation No. 17 of 2020, including the Kedonganan Fish Market in Badung Regency, Bali. The solutions and methods offered in this program include hygiene and sanitation counseling, demonstrations and hand washing exercises, as well as training on making economical ice packs. Partners will also receive PPE assistance packages, personal hygiene, and environmental sanitation to help partners implement the program. In terms of input, this activity was successfully carried out on July 2, 2022, with satisfying enthusiasm from the participants and very cooperative partners. For utcome, there is a significant increase in partner knowledge. In the output indicators, there is a significant change in partner attitudes and all partners have been able to carry out the 7 steps of hand washing. This program is expected to be implemented continuously in order to realize a Healthy Market.

Abstrak

Sebagian besar pasar tradisional di Indonesia tidak memenuhi syarat Pasar Sehat sebagaimana Peraturan Kementerian Kesehatan no 17 tahun 2020, termasuk Pasar Ikan Kedonganan yang berada di Kabupaten Badung, Bali. Solusi dan metode yang ditawarkan pada program ini meliputi penyuluhan hygiene dan sanitasi, demonstrasi dan senam cuci tangan, serta pelatihan pembuatan ice pack ekonomis. Mitra juga akan mendapatkan paket bantuan APD, hygiene personal, dan sanitasi lingkungan untuk membantu mitra menerapkan program.  Secara input, kegiatan ini berhasil terlaksana dengan baik pada tanggal 2 Juli Juli 2022 dengan antuasiasme peserta yang memuaskan dan mitra sangat koperatif. Secara outcome, terdapat peningkatan pengetahuan mitra yang bermakna signifikan. Pada indikator output, terdapat perubahan sikap mitra yang bermakna signifikan dan seluruh mitra sudah mampu melaksanakan 7 langkah cuci tangan. Program ini diharapkan dapat dilaksanakan berkelanjutan untuk dapat mewujudkan Pasar Sehat.
Training of the Making of Jawawut Diamonds and Its Packaging in Kabupaten Kepulauan Selayar
Authors: Husnaeni Husnaeni , Rustam Rustam , Djalil Djalil , Makkatenni Makkatenni , Lince Ranak , Kusmaladewi Kusmaladewi
Published: December 2022

The training on making diamonds from raw materials of Jawawut is based on the abundant production of Jawawut in this area and is used as bird feed. A small portion is traditionally processed as a snack that cannot last long. This training aims to provide knowledge, understanding and skills to the people of the Selayar Islands to process Jawawut raw materials become diamond-jawawut that last a long time so that they become people's food and can support the community's economy. This training was carried out for 3 (three) consecutive months, starting from June – August 2020, the participants of this training were 22 people, consisting of the Village Head, and staff, PKK members, entrepreneurs in the Selayar Islands Regency. Participants are very enthusiastic about participating in the training, the results obtained by participants have understood, mastered and skilled in processing millet raw materials into diamonds that can last a long time as a source of additional income, can also be consumed by the local community and used as gifts for tourists both locally and abroad.

Abstrak

Pelatihan pembuatan wajik dari bahan baku jawawut dilandasi oleh produksi jawawut di daerah ini melimpah dan dimanfaatkan sebagai pakan burung, Sebagian kecil diolah secara tradisonal sebagai penganan yang tidak dapat bertahan lama. Olehnya itu pelatihan ini bertujuan untuk memberi pengetahuan, pemahaman dan keterampilan kepada masyarakat kepulauan selayar mengolah bahan baku jawawut menjadi wajik-jawawut yang bertahan lama sehingga menjadi bahan pangan masyarakat dan dapat menjadi penopang perekonomian masyarakat. Pelatihan ini dilaksanakan selama 3 (tiga) bulan berturut-turut, dimulai Juni – Agustus 2020, peserta pelatihan ini sebanyak 22 orang, yang terdiri dari Kepala Desa, dan staf, anggota PKK, pengusaha di Kabupaten Kepulauan Selayar. Peserta sangat antusias mengikuti pelatihan, hasil yang diperoleh peserta telah memahami, menguasai serta terampil mengolah bahan baku jawawut menjadi wajik yang dapat bertahan lama sebagai sumber penghasilan tambahan, juga dapat dikomsumsi oleh masyarakat setempat dan dijadikan oleh-oleh bagi wisatawan baik lokal maupun manca negara.
Development of instrumental methods for accounting the spawning grounds area of herring in the Sea of Okhotsk
Authors: Dulenin A. A. , Sviridov V. V.
Published: December 2022

Methods for accounting of herring spawning grounds area using consumer grade underwater robots and UAVs were worked out. Such devices are promising for use due to their relatively low cost, ease of deployment and application. Experimental procedures were carried out from May 11 to June 9 in the Kruglaya and Tungusskaya bays (the northern part of the Okhotsk Sea) during the period of herring spawning. With the help of underwater robots, spawning grounds should be surveyed by short point diving and short transects. Series of screenshots of bottom, recorded on a mobile device, could be georeferenced automatically. The work should be accompanied by the recording of tracks, station coordinates and other attribute data in a mobile geographic information system (GIS). Unmanned flights over spawning grounds must be carried out in the mode of automatic linear and polygon missions or manually. For the orthophotos production, the optimal height is 150 m with a forward overlap of images no less than 80% and a side overlap no less than 50% (no less than 20% in case of very good bottom visibility and survey conditions). During harsh survey conditions, zigzag flights over spawning grounds at a height of 50 m are preferred with shooting a series of photographs without intersection and no orthophotos production. The materials of underwater and unmanned surveys, integrated into the desktop GIS, provide high accuracy and efficiency in estimating the area of spawning grounds, the maximum degree of documentation and verifiability of the obtained materials.
On the taxonomy of Miltochrista dagmarae Černý with descriptions of a new species and a new subspecies (Lepidoptera: Erebidae: Arctiinae)
Authors: Volynkin Anton V. , Černý Karel
Published: December 2022

The genitalia of both sexes of Miltochrista dagmarae (Černý, 2016) are diagnosed. A new subspecies and a new species are described: Miltochrista dagmarae anaptigmena ssp. n. (Thailand) and Miltochrista diasticta sp. n. (Northeast India: Assam). Adults, male and female genitalia of the taxa considered are illustrated.
Conditional H i Mass Functions and the H i-to-halo Mass Relation in the Local Universe
Authors: Li Xiao , Li Cheng , Mo H. J. , Xiao Ting , Wang Jing
Published: December 2022

We present a new H i mass estimator that relates

log

10

(M
HI/M
*) to a linear combination of four galaxy properties: stellar surface mass density, color index u − r, stellar mass, and concentration index, with the scatter of individual galaxies around the mean H i mass modeled with a Gaussian distribution function. We calibrate the estimator using the xGASS sample, including both H i detection and nondetection, and constrain the model parameters through Bayesian inferences. Tests with mock catalogs demonstrate that our estimator provides unbiased H i masses for optical samples like SDSS. We apply our estimator to the SDSS spectroscopic sample to estimate the H i mass function (HIMF) of local galaxies, as well as the conditional H i mass function in galaxy groups and the H i–halo mass relation. Our HIMF agrees with the ALFALFA measurements at M
HI ≳ 5 × 109
M
⊙, but with higher amplitude and a steeper slope at lower masses. We show that this discrepancy is caused primarily by the cosmic variance, which is corrected for the SDSS sample but not for ALFALFA. The total CHIMFs for all halo masses can be described by a single Schechter function, while those of central galaxies show a double-Gaussian profile. The total H i mass in a group increases monotonically with halo mass, but for central galaxies, the H i mass shows weak dependence on halo mass when M
h ≳ 1012
M
☉. The observed H i–halo mass relation is not reproduced by current hydrodynamic simulations and semianalytic models of galaxy formation.
Active Galactic Nucleus Variability in the Age of Rubin
Authors: Creque-Sarbinowski Cyril , Kamionkowski Marc , Zhou Bei
Published: December 2022

Over the next 10 years, the Vera C. Rubin Observatory (Rubin) will observe ∼10 million active galactic nuclei (AGNs) with a regular and high cadence. During this time, the intensities of most of these AGNs will fluctuate stochastically. Here, we explore the prospects to quantify precisely these fluctuations with Rubin measurements of AGN light curves. To do so, we suppose that each light curve is described by a damped random walk with a given fluctuation amplitude and correlation time. Theoretical arguments and some current measurements suggest that the correlation timescale and fluctuation amplitude for each AGN may be correlated with other observables. We use an expected-information analysis to calculate the precision with which these parameters will be inferred from the measured light curves. We find that the measurements will be so precise as to allow the AGNs to be separated into up to ∼10 different correlation-timescale bins. We then show that if the correlation time varies as some power of the luminosity, the normalization and power-law index of that relation will be determined to


(

10

−
4

%
)

. These results suggest that with Rubin, precisely measured variability parameters will take their place alongside spectroscopy in the detailed characterization of individual AGNs and in the study of AGN population statistics. Analogous analyses will be enabled by other time-domain projects, such as CMB-S4.
Satellite Constellation Avoidance with the Rubin Observatory Legacy Survey of Space and Time
Authors: Hu Jinghan Alina , Rawls Meredith L. , Yoachim Peter , Ivezić Željko
Published: December 2022

We investigate a novel satellite avoidance strategy to mitigate the impact of large commercial satellite constellations in low-Earth orbit on the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). We simulate the orbits of currently planned Starlink and OneWeb constellations (∼40,000 satellites) to test how effectively an upgraded Rubin scheduler algorithm can avoid them, and assess how the overall survey is affected. Given a reasonably accurate satellite orbit forecast, we find it is possible to adjust the scheduler algorithm to effectively avoid some satellites. Overall, sacrificing 10% of LSST observing time to avoid satellites reduces the fraction of LSST visits with streaks by a factor of 2. Whether such a mitigation will be required depends on the overall impact of streaks on science, which is not yet well quantified. This is due to a lack of adequate information about satellite brightness distributions as well as the impact of glints and low surface brightness residuals on alert purity and systematic errors in cosmological parameter estimation. A significant increase in the number of satellites or their brightness during Rubin Operations may make implementing this satellite avoidance strategy worthwhile.
Positive Behavior Values to Improve Student Self-Efficacy: A Case Study in Islamic Boarding Schools
Authors: Naqiyah Najlatun
Published: December 2022

Student self-efficacy is related to the belief of individuals doing daily activities in boarding schools. This study aims to describe the positive behavior performed by Kiai and Nyai to improve student self-efficacy. Research Methods use qualitative methods with case studies. Data is obtained by interviews, observations and documentation. Data analysis uses content analysis. The results showed that Kiai and Nyai's positive behavior could improve students' self-efficacy. Examples of Kiai and Nyai's behavior include giving positive values such as honesty, patience, gratitude, self-acceptance, and self-assessment. The increase in student self-efficacy can start with oneself solving problems encountered in school. Kiai and Nyai as role models and behaviors of Islamic values can be applied by counselors to change students in a better direction to be happy. The implication is that counselors need to set an example, strengthening students' positive values so as to increase self-efficacy
Risk Factors That Correlate with Resistance to First-Line Chemotherapy on High-risk Gestational Trophoblastic Neoplasia
Authors: Kurniadi Andi , Zulvayanti Zulvayanti , Suardi Dodi , Mantilidewi Kemala , Irsyad Bayu Indrayana , Reswari Arnova , Purwara Benny Hasan , Winarno Gatot Nyarumenteng Adhipurnawan
Published: December 2022

BACKGROUND: Gestational trophoblastic neoplasia (GTN) is a condition arising from abnormal proliferation of the trophoblastic cells. GTN incidence in Indonesia, precisely in Hasan Sadikin General Hospital, as many as 730 cases are reported per year. GTN is generally highly sensitive to chemotherapy, and multiagent chemotherapy regimens are recommended for high-risk GTN. Multiagent chemotherapy regimens for GTN treatment at Hasan Sadikin General Hospital are EMCO, with no other literature study describing chemotherapy resistance with EMCO today.

AIM: This study aimed to identify risk factors associated with first-line chemotherapy resistance at Hasan Sadikin General Hospital.

METHODS: In this cross-sectional study, medical records of 81 patients with high-risk GTN presented in the period from January 2018 to June 2021 who received EMCO chemotherapy at Hasan Sadikin General Hospital were retrieved from the archives, and medical data were reviewed and analyzed. Bivariate analysis was performed using the Chi-square test with Fisher’s exact alternative, and multivariate analysis using the binary logistic regression test. p < 0.05 was considered statistically significant.

RESULTS: From 81 samples that received EMCO chemotherapy, 15 (18.5%) cases were resistant to EMCO, and 66 (81.5%) cases were responsive to EMCO. The risk factors associated with EMCO resistance were histopathological features and appropriate with EMCO chemotherapy interval (p < 0.05). Variables of age, previous pregnancy, GTN stage, FIGO prognostic score, stage, beta-hCG level, and side effects of EMCO did not significantly correlate with resistance to EMCO (p > 0.05).

CONCLUSION: Histopathological features and appropriate chemotherapy intervals were associated with the incidence of resistance to EMCO in Hasan Sadikin General Hospital.
Investigation of dielectric and magnetic properties of AL-800 ferrite
Authors: Rudys Saulius , Balčiūnas Sergejus , Vollinger Christine , Banys Jūras , Kalendra Vidmantas
Published: December 2022

Ferrites are usually used in accelerators for tuning radiofrequency (RF) cavities and in nonreciprocal devices controlling the power flow in RF accelerating systems. The conventional parallel‐biased Ni Zn ferrites employed for varying the frequency of accelerating cavities have the disadvantage of high saturation magnetization (4πMs). Application of the transversely biased yttrium iron garnet (YIG) material in RF tuners promises a significant reduction of power loss compared with systems that use the longitudinal bias. To inject the beam and extract the beam out of the CERN accelerator rings the fast kicker magnets made from ferrite materials must be used. Power deposition in the kicker magnets can be a limitation: if the temperature of the ferrite yoke exceeds the Curie temperature, the beam will not be properly deflected. Investigation of the ferrite electromagnetic properties of materials up to the GHz frequency range is essential for a correct impedance evaluation. This report summarizes an approach for deriving electromagnetic properties as a function of both frequency and temperature of the AL-800 garnet material. This information will be useful for simulating ferrite behaviour under realistic operating conditions.
La electrónica al servicio de la construcción
Authors: D'Aboville
Published: December 2022

No disponible
Cinta transportadora que puede llevar dos clases de material
Authors: Anónimo
Published: December 2022

No disponible
Máquina para ensayo de resistencia a la tracción en cementos
Authors: Anónimo
Published: December 2022

No disponible
Nuevo y revolucionario método para la fabricación de cal
Authors: Lenhart  , Rockwood
Published: December 2022

No disponible
Triturador con doble rotor
Authors: Anónimo
Published: December 2022

No disponible
Cementos germicidas
Authors: Anónimo
Published: December 2022

No disponible
Modernización de una fábrica de tejas y ladrillos en Francia
Authors: Editorial
Published: December 2022

No disponible
Cementos bajos en cal
Authors: Ferrari
Published: December 2022

No disponible
Nueva excavadora locomovil
Authors: Anónimo
Published: December 2022

No disponible
Cómo evitar la pérdida de humedad en los suelos de cemento
Authors: Anónimo
Published: December 2022

No disponible
Diversify to expand concrete masonry production
Authors: Anónimo
Published: December 2022

No disponible
The rapid determination of sulphur trioxido
Authors: Anónimo
Published: December 2022

No disponible
Utilization of fly-ash
Authors: Pirani  , Smith
Published: December 2022

No disponible
Chemical-resistant resin cements
Authors: Anónimo
Published: December 2022

No disponible
Concrete guides used to position equipment at belgian cement mill
Authors: Anónimo
Published: December 2022

No disponible
Un matériau de construction récent: le placoplateb
Authors: Anónimo
Published: December 2022

No disponible
Effectiveness of pharmacologic interventions for prevention of cerebral hyperperfusion syndrome following bypass surgery
Authors: Skandalakis Georgios P. , Kalyvas Aristotelis , Lani Evgenia , Komaitis Spyridon , Manolakou Danai , Chatzopoulou Despoina , Pantazis Nikos , Zenonos Georgios A. , Hadjipanayis Constantinos G. , Stranjalis George , Koutsarnakis Christos
Published: December 2022

BACKGROUND:

Cerebral hyperperfusion syndrome (CHS) following bypass surgery is a major cause of neurological morbidity and mortality. However, data regarding its prevention have not been assorted until date.

OBJECTIVE:

The objective of this study was to review the literature and evaluate whether any conclusion can be drawn regarding the effectiveness of any measure on preventing bypass-related CHS.

METHODS:

We systematically reviewed PubMed and Cochrane Library from September 2008 to September 2018 to collect data regarding the effectiveness of pharmacologic interventions on the refers to pretreatment (PRE) of bypass-related CHS. We categorized interventions regarding their class of drugs and their combinations and calculated overall pooled estimates of proportions of CHS development through random-effects meta-analysis of proportions.

RESULTS:

Our search yielded 649 studies, of which 23 fulfilled inclusion criteria. Meta-analysis included 23 studies/2,041 cases. In Group A (blood pressure [BP] control), 202 out of 1,174 pretreated cases developed CHS (23.3% pooled estimate; 95% confidence interval [CI]: 9.9–39.4), Group B (BP control + free radical scavenger [FRS]) 10/263 (0.3%; 95% CI: 0.0–14.1), Group C (BP control + antiplatelet) 22/204 (10.3%; 95% CI: 5.1–16.7), and Group D (BP control + postoperative sedation) 29/400 (6.8%; 95% CI: 4.4–9.6)].

CONCLUSIONS:

BP control alone has not been proven effective in preventing CHS. However, BP control along with either a FRS or an antiplatelet agent or postoperative sedation seems to reduce the incidence of CHS.
Cerebral venous sinus thrombosis as the initial presentation of occult adult leukemia
Authors: Chen Shu-Yi , Yang Tzu-Chiang , Chen Chung-Wen , Hsu Hung-Yi
Published: December 2022

In this report, we present a rare case of cerebral venous thrombosis (CVT) as the initial presentation of hematological malignancy. A 49-year-old woman visited our hospital due to a progressive headache for 3 weeks. Brain imaging studies revealed edema in the right thalamus and bilateral caudate nuclei and acute thrombosis in the straight and right transverse sinuses. Initial laboratory investigations revealed only mild anemia and were negative for coagulopathy or autoimmune diseases. The patient had a complete recovery after anticoagulation therapy. Unfortunately, acute quadriparesis and coma occurred after warfarin was stopped for 3 months. Magnetic resonance imaging showed acute thrombosis of the basilar artery with brainstem infarction. At 11 months after the first presentation, acute leukemia was diagnosed due to marked leukocytosis and immature myeloblast cells in the peripheral blood. Bone marrow examination should be performed in patients with CVT with unexplained anemia. A continuous search for CVT causes after the acute phase is essential for patients with CVT.
Quality Assessment of Market Samples of Ashokarishta
Authors: Fadnis Soumya S. , Kamat Rajeshwari V.
Published: December 2022

Background:

Ashokarista is an Ayurvedic herbal remedy with Ashoka as the main ingredient for rejuvenating the female reproductive system and blood. Because of the rapid commercialization of Ayurvedic products, assurances of their safety and efficacy have become critical. Therefore, to achieve this, the Ayurvedic Pharmacopoeia of India advocates the implementation of various Quality Control Parameters, such as Organoleptic Characters, Physico-chemical characteristics, Qualitative analysis, Quantitative analysis, and Microbial tests.

Aim and Objective:

To evaluate the quality standards of Ashokarishta's selected marketed samples.

Materials and Methods:

Quality control parameters such as organoleptic characteristics, physicochemical analysis, and microbial contamination studies were applied to all samples collected.

Results:

The current findings show that the samples differ in several analytical parameters.

Conclusion:

Sample A was found to be safe and had the highest concentration of gallic acid of the five samples tested.
Stage-wise Management of Pakshaghata (Ischemic Stroke with Left Hemiplegia) Through Ayurveda - A Case Report
Authors: Belaguli Govardhan , Nithin S. A.
Published: December 2022

In the context of Ayurveda, the condition Pakshaghata counters with hemiplegia and its variety of characteristic symptoms. The causes, pathogenesis and its management are well elucidated in Ayurveda. The following is a case report of an elderly male patient with Pakshaghata (Ischemic stroke with left hemiplegia) that was effectively treated on two different stages for nearly 56 days. His condition was divided into two stages, a) Margavaranajanya (~obstruction and adherence of other Doshas by the aggravated Dosha) stage, and b) Vatanulomana (~controlling of vitiated Vata dosha, bringing back to its normalcy) stage. The drugs that had the properties of Agnideepana (~neutralizers of the impaired metabolic fire), Amapachana (~metabolizers of undigested toxins), Srotoshodana (~evacuators of obstructed channels) and Vatanulomana were found effective in the first stage. As Vata Dosha (~one of bodily humors), is considered as the master controller of nervous system, and in order to bring it back to normal from the vitiated state, a set of drugs that had the property of Vatanulomana, Balya (~strength promoters) and Rasayana (~rejuvenators) were induced in the second stage. There was a significant improvement in his degree of disability as per Scandinavian stroke score, Barthel Index score and Modified Rankin Scale; it measured 51, 65 and 3 respectively after the intervention (from 16, 0 and 5 prior to intervention). Through this study, it can be planned that, the treatment protocol of Pakshaghata can be judged by the acute and chronic phase of the condition based on its association with Vata dosha. The wise selection of the appropriate drugs and therapies in the present case secured the optimistic outcome of the intervention. Although his concluding magnetic resonance imaging of brain notified “no” modifications, at the time of discharge he was privileged with refurbished gait; sensory and motor deficits with increased quality of life, which prompted us to document it.
Ayurveda Management of Vatahata Vartma - A Case Report
Authors: Kalburgi Chidanand Naganna , Arbar Azizahmed Imamsab , Hulyalkar Kaveri N , Geothsona V
Published: December 2022

Lagophthalmos is a condition characterized by incomplete or abnormal closure of eyelids along with the evaporation of tear film. If left untreated, it progresses to corneal ulceration, perforation, and visual loss. Conservative nonsurgical treatment includes the use of artificial tears, ointments, and therapeutic contact lenses. However, if nonsurgical approaches are not effective, surgical procedures such as tarsorrhaphy and gold/platinum implantation are used which are expensive with risks of poor cosmetic appearance. The current case was diagnosed as lagophthalmos which can be clinically correlated to Vatahata vartma described in Ayurveda. Amapachana followed by Panchakarma and Kriyakarmas along with Vata shamana chikitsa were adopted which are cost-effective, less invasive, and cosmetic friendly when compared with conventional science. This article highlights the successful reduction in core symptoms of lagophthalmos with the Ayurveda line of treatment.
Evaluation of the Incidence of Central Venous Catheter-Associated Infections in Patients Admitted in the Intensive Care Unit of a Tertiary Hospital in Nigeria
Authors: Okafor Onyekachi V. , Amucheazi Adaobi O. , Onyekwulu Fidelis A.
Published: December 2022

Background:

Presence of a central venous catheter (CVC) though useful may lead to CVC-associated bloodstream infections (CVCBSIs), resulting in increased morbidity and mortality.

Objectives:

The objectives of the study were to determine the incidence of CVCBSIs, the predominant causative microorganisms, the antibiotic sensitivity pattern of the microorganisms, and the associated risk factors.

Materials and Methods:

This prospective observational study evaluated the incidence of CVCBSIs in patients who had the catheter inserted on admission into the intensive care unit (ICU) of a tertiary hospital in South-East, Nigeria. Sixty-eight patients were recruited for the study. Blood samples were collected aseptically from a peripheral vein on admission, 72 h after the insertion of CVC, and at removal of CVC for blood culture. The distal 5 cm of the CVC was also collected at removal for microscopy, culture, and sensitivity testing.

Results:

Six out of all the patients recruited developed CVCBSIs, giving an incidence rate of 9.2%, whereas 48% (n = 31) developed catheter bacterial colonization. Over one-fifth (22.7%) of the patients with catheter duration beyond 5 days had CVCBSIs. Patients whose CVC duration was beyond 5 days had a higher risk of CVCBSIs (P = 0.015) than others. The commonest microorganism isolated was Staphylococcus aureus, whereas the most susceptible antibiotic was aminoglycoside (gentamycin).

Conclusion:

The incidences of CVCBSIs and CVC colonization were 9.2% and 48%, respectively. The duration of catheterization was found to be a major risk factor for CVCBSIs. The most predominant organism isolated was S. aureus. The most sensitive antibiotic agent was the aminoglycoside (gentamycin). It is therefore recommended that catheter care bundle which includes hand hygiene, use of chlorhexidine for skin preparation during insertion, use of barrier precautions during insertion, and the removal of unnecessary central lines should be strictly adhered to. Gentamycin should be used as empirical antibiotics in the ICUs.
Assessment of Resilience in the Second wave of the COVID-19 Pandemic
Authors: Chinawa Awoere T. , Ossai Edmund N. , Aronu Ann E. , Chinawa Josephat M.
Published: December 2022

Background:

The second wave of the COVID-19 pandemic has created much psychological burden on the adolescent child. Resilience is an intertwine of risk and protective factors that may help the adolescent child in growth and development.

Objectives:

This study aimed to determine the factors that influence resilience among adolescents attending secondary schools in southeast Nigeria.

Materials and Methods:

This is a cross-sectional study of 496 adolescent students who attend six secondary schools in Enugu city.

Results:

The majority of the respondents, 79.4%, feel safe when they are with their families. A high proportion of the respondents, 61.5%, were resilient. A comparable proportions of male (59.9%) and female (62.9%) respondents were resilient. (χ
2=0.476, P = 0.490). A significantly higher proportion of respondents who were in junior secondary three class, 70.5%, were resilient when compared with those in senior secondary three class, 59.4% (χ
2=4.050, P = 0.044). The highest proportion of respondents who had strong social support, 75.8%, were resilient, whereas those who had poor social support were the least, 36.6%. The observed difference was statistically significant (χ
2=39.995, P < 0.001). The respondents who had poor social support were about six times less likely to be resilient when compared with those who had strong social support [adjusted odds ratio (AOR)=0.177, 95% confidence interval (CI): 0.099–0.317]. Also, the respondents who had moderate social support were about three times less likely to be resilient when compared with those who had strong social support (AOR=0.369, 95%CI: 0.261–0.601).

Conclusion:

Resilience in adolescents is enhanced by education, being in junior secondary class, good family structure, and strong social support.