bluuebunny/crossref_metadata_2025_split huggingface dataset:
Desain Rancang Bangun Cooling Tower menggunakan Aplikasi Autocad Skala Laboratorium Teknik Mesin Universitas Muhammadiyah Tangerang
Authors: Laksanawati Ellysa Kusuma , Sulaeman Agus , Rosydin Ali 
Published: August 2022

Cooling tower merupakan suatu peralatan yang digunakan untuk menurunkan temperatur air dengan cara menguapkan panas air ke atmosfir. Untuk mendapatkan desain dalam rancang bangun cooling tower skala laboratorium teknik mesin Universitas Muhammadiyah Tangerang, dilakukan studi literatur dan observasi, selanjutnya desain yang telah jadi, akan menjadi panduan operator dalam proses pengerjaan pada setiap bagian dari cooling tower sampai proses finishing.Berdasarkan hasil analisa desain rancang bangun cooling tower menggunakan aplikasi AutoCad skala laboratorium teknik mesin Universitas Muhammadiyah Tangerang, maka dapat diperoleh desain tabung cooling tower dan desain stand cooling tower. Berdasarkan dari hasil karya tulis ilmiah tentang “Desain rancang bangun Cooling Tower menggunakan aplikasi AutoCad skala laboratorium teknik mesin Universitas Muhammadiyah Tangerang” yang telah selesai, maka didapat beberapa kesimpulan, yang pertama adalah desain tabung cooling tower dan yang kedua adalah desain stand cooling tower, dimana setiap komponen yang di desain memiliki ukuran – ukuran sebagai berikut: Tinggi keseluruhan tabung 97,5 cm, Tinggi water basin 14 cm, Diameter tabung 66 cm, Keliling tabung 210 cm dan Volume water basin 47 liter, ukuran desain stand cooling tower meliputi: Tinggi stand 81 cm, Panjang stand 100 cm dan Lebar stand 144 cm.
Perencanaan Strategi Pemasaran Tanaman Hias Taman Anggrek Ragunan di Masa Pandemi Covid-19
Authors: Martoyo Anang , Hendrawan Satya Arisena , Hesananda Rizki 
Published: August 2022

Penelitian bertujuan untuk merumuskan strategi pemasaran pada pedagang tanaman hias di Taman Anggrek Ragunan, Jakarta Selatan di masa pandemi Covid-19. Metode penelitian yang digunakan adalah deskriptif kualitatif dengan mengidentifikasi permasalahan dan menganalisanya melalui faktor-faktor internal dan eksternal. Alat analisis yang digunakan adalah Matrik SWOT dan Kuadran SWOT. Menurut hasil ’SWOT analysis’ dapat ditentukan bahwa posisi bisnis pedagang tanaman hias di Taman Anggrek Ragunan terletak pada Kuadran 1 (0,52 : 0,90). Hasil ini menunjukkan bahwa bisnis berada pada kekuatan dan peluang yang potensial untuk dikembangkan melalui strategi SO atau strategi agresif. Adapun formulasi strategi yang dapat diterapkan adalah dengan memanfaatkan lokasi untuk menambah pangsa pasar, mengoptimalkan digital marketing melalui media sosial, marketplace, dan website, kemudian menerapkan strategi product bundling, mempertahankan dan meningkatkan kualitas produk/layanan, membudidayakan sendiri anggrek bulan dan varian tanaman lainnya, serta bekerjasama dengan jasa perbankan dalam penyediaan permodalan untuk pengembangan bisnis.
Generation of triangular waveform radiofrequency signals based on photonic filtering using a broad-spectrum source
Authors: Muraoka Espíritu Ramón , Arvizu Arturo , Sánchez López Juan de Dios , Mendieta Jiménez Francisco Javier , Santos Aguilar Joel 
Published: August 2022

This work proposes a photonic method to generate optical pulses with a triangular wave shape using a low coherence source. We modulate this source using a sinusoidal radio frequency signal as a local oscillator. We eliminate the second harmonic of the spectral components generated by the modulation process tuning a reject filter to get a triangular wave. We implement the filter using an interferometer with a delay line in one of their branches. To tune the filter, the only adjustment required is over the optical delay line. We developed our scheme in a simulation environment but based on the use of optical and optoelectronic elements with parameters of commercial devices, some of them available in our laboratory. We generate triangular waveform signals with pulse frequencies of 100, 150, 250, and 300 MHz as proof of concept. The proposed scheme has the advantage of being low cost and easy to use because it does not require bias control nor adjustment to Vpi voltage. Usually, other authors must vary these parameters to get the desired electrical signal. Still, we generate the triangular waveform by adjusting only the local oscillator frequency and the optical delay line. Therefore, because we use a broad-spectrum optical source and do not require a strictly controlled variable voltage, our system will be cheaper.
FOREIGN DIRECT INVESTMENT AND REAL GROSS DOMESTIC PRODUCT: ANALYSIS OF EMPIRICAL EVIDENCE FROM SRI LANKA
Authors: Kengatharan, L.  , Jeyan Suganya, D.F.  
Published: August 2022

Foreign Direct Investment is one of the crucial forms of international equity flows for having undeniable growth in gross domestic product among emerging countries. The main objective of the study is to investigate the empirical relationship between foreign direct investment and real gross domestic product in Sri Lanka. Net foreign direct inflow was considered as the independent variable while real gross domestic product was considered as the outcome variable in this study. However, Exchange rate and money supply were selected as the control variables on the relationship between foreign direct investment and real gross domestic product. The current study used annual time series data over the period from 1970 to 2019 which were collected from the annual reports of the Central Bank of Sri Lanka. Stationary of the data was tested using the Augmented Dickey-Fuller test. Johansen co-integration rank test, max Eigen value test, Vector Error Correction (VEC) were used to estimate the relationship between foreign direct investment and real gross domestic product. At the 5% level of significance, the co-integration rank test and max Eigen value test revealed that there is only one co-integration equation existing in the study. Therefore, it was concluded that foreign direct investment has long-run impact on economic growth. Likewise, VEC revealed that foreign direct investment, exchange rate and money supply cause real GDP in the short run. The results support the theoretical prediction that foreign direct investment would play an active role in economic growth as it positively leads to the GDP. The study, therefore, concludes that foreign direct investment is driving the economic growth in Sri Lanka.

Keywords: Foreign Direct Investment, Economic Growth, Vector Error Correction Model, Sri Lanka
Mi lehetne a Gripen utódja?
Authors: Major Gábor , Bodnár Balázs György , Szilvássy László 
Published: August 2022

Egy terület feletti légtér felügyelete, védelme minden korban, minden időszakban kiemelt feladata az adott nemzetnek. Ebben a feladatban a világ minden táján a legmodernebb harci repülőgépek vállalnak szerepet. Ahhoz, hogy meghatározzuk, a legmodernebb mit is jelent pontosan, sok-sok összetevő együttállása szükséges. Ilyenek a technikai paraméterek, az üzemeltethetőségi környezet, a rendszerbe illeszthetőség, valamint a fegyverzeti anyagok beszerzésének lehetőségei. De minden felsorolt összetevő a gyártás és üzembe helyezés idejében a legmodernebb, ezt követően a használat során avul, öregszik. A légi jármű életciklusának végéhez közeledve eljön a váltás vagy a modernizálás dilemmája. A dilemmával új kérdések is születnek. Vajon az utód szintén képessé teszi-e Magyarországot, hogy még mindig a térség egyik legerősebb légiereje legyen? Megéri-e több régebbi típust venni, amelyek modern eszközökkel felszereltek, vagy kevesebb olyan típust, amelyek a legkorszerűbb eszközökkel felszereltek? A publikációban a szerzők ezekre a kérdésre keresik a válaszokat, néhány lehetséges „utód” bemutatásán keresztül.
Pengaruh Korosi Terhadap Kegagalan Logam pada Jembatan : Literature Review
Authors: Kurniasari Anita Putri , Amalia Yasmina 
Published: August 2022

Jembatan baja digunakan sebagai bahan konstruksi karena sifat ringan, ketahanan, dan kemu-dahannya untuk dirakit. Namun kegagalan pada jembatan baja meningkat secara eksponensial. Kelelahan struktural, penuaan material yang dikombinasikan dengan peningkatan beban lalu lintas, menjadi penyebab dalam kerusakan jembatan, dimana dalam hal ini korosi menjadi baha-san utama dari penurunan kualitas dan kegagalan pada jembatan. Pada hasil literature review be-berapa paper, didapatkan hasil bahwa dari pengamatan visual pada baja jembatan di lingkungan air laut, sungai, dan di lingkungan sekitar limbah toilet. kerusakan struktur jembatan yang disebabkan korosi dari ion klorida pada air laut lebih tinggi dibanding dengan korosi pada ling-kungan sungai dan cairan limbah di kereta api. Laju korosi yang terjadi pada lingkungan laut lebih tinggi dibanding pada lingkungan sungai dan cairan limbah toilet. Pada lingkungan korosif, ion klorida atau sulfat akan berdifusi ke baja melalui beton struktur jembatan.
Similarity Analysis of Understorey Plant Species in Forest Areas
Authors: Sidabukke Simon , Ternala Alexander Barus  , Budi Utomo  , Delvian  , Fathiatul Rizkia Aulin  
Published: August 2022

Many forests have substantial understorey plants. These plants have an important contribution to soil and water conservation. The similarity index determines the resemblance of species structure and composition in a community. This research is aimed to see the impact and relationship of changes in the allocation of forest areas to the similarity of understorey species. The research was conducted using the line plot sampling method, sized 2 m x 2 m, with the understorey plants observed have been measured from germination to young plant (height 1.5 m). The number of plots in the plantation forest is 480 plots, protected areas 224 plots, and natural forest 96 plots. Determination of the number of understorey plots based on the minimum representative area curve. A Similarity Index was performed to analyze the data. The results indicated that there is an impact of changes in the forest area on the similarity of understorey species. It is known from the low similarity index value at the research location. It is due to the differences in environmental factors at the two locations such as air humidity, air temperature, the intensity of sunlight, and different patterns of forest area management.
Assessment Of The Follicles in Different Age Groups in Post Mortem Human Ovary
Authors: Eami Eshrat Jahan , Ahmed Md Shameem , Zahir Muneera , Suchi Halima Akhter , Farzana Taposhi 
Published: August 2022

Ovary is one of the essential reproductive organs in human being. A detailed histomorphological feature of ovary is an un-debatable for diagnostic and therapeutic purpose for ovarian disease. The standardization of the morphological and histological measurements of ovary in general in Bangladeshi people is essential to increase the knowledge regarding anatomical variation in our population. So a research work on detailed anatomical parameters of ovary is an un-debatable.
Objective: To find out the follicles in different age groups post mortem human ovary.
Methodology: The cross-sectional observational study was carried out in the Department of Anatomy, Sylhet MAG Osmani Medical College, Sylhet in collaboration with the Department of Forensic Medicine, Sylhet MAG Osmani Medical College during the period from January 2016 to December 2016. Sixty pairs of human postmortem ovaries were collected. The inclusion criteria were dead bodies autopsied within 36 hours of death. Considerable signs of decomposition or decomposed dead body, presence of gross ovarian disease and any history of poisoning cases were excluded. All the specimens were examined for morphological parameters but only 18 specimens were examined histological parameters.
Results: The highest total numbers of the follicles were found in the age group A and lowest total numbers of the follicles were in the age group C. The differences of total numbers of the follicles were significant between group-A and group-B (p<0.001); and group-A and group-C (p<0.001); but no significant difference was observed between group-B and group-C (p=0.080).
Conclusion: Histomorphologically, the total number of the follicles is found maximum at reproductive years and is declined through perimenopause and postmenopause.
Central Medical College Journal Vol 5 No 2 Jul 2021 PP 84-87
Prognostic Role of Cardiac Troponin I after Percutaneous Coronary Intervention in Stable Coronary Disease
Authors: Khalil Md Ibrahim , Hossain Md Belal , Monsur Helal Khondoker Al , Das Anjon Kumar , Hoque Amdadul , Rahman Taifur , Rahman Md Mostafizur , Uddin Md Iftekhar , Md Motiour Rahman Abu Foyez , Rahman Siddiqui Mohammad Khalilur , Rahman Md Mizanur , Chowdhury Abdul Wadud 
Published: August 2022

Cardiac troponin I is a highly sensitive and specific marker of myocardial necrosis. In addition to the strong diagnostic role of cardiac troponin I its prognostic value has become increasingly well established for patients presenting with acute coronary syndrome. However, there have been conflicting reports on the value of troponin in the setting of PCI is stable and unstable coronary disease.
Objective: To assess the role of cardiac troponin I in predicting outcome after PCI.
Methods and results: CTnl was measured immediately before and at 8 hrs and at chest pain after PCI in 80 consecutive patients with stable coronary artery disease. Twenty of them with post procedural CTnl level 50.4 ng/ml were excluded because of the inability to do repeat estimation of CTnl at chest pain. Among the rest sixty patients, thirty had post procedural troponin <0.4 ng/ml were considered as group I and thirty had post procedural rise of CTnI >0.4 ng/ml were considered as group II. CTnl level, 0.4 ng/ml was consider as cut off value for grouping patients was based on ACC/ AHA/ ISCAI 2005 guide line definition of peri procedural myocardial infarction. The study end point was the following adverse cardiac events-recurrent angina, cardiogenic shock, significant arrythmias, congestive heart failure, Q wave MI, repeat PCI/ CABG, death during hospital stay and at 30 days follow up. In this study base line parameters like age, sex, BMI, risk factors, anginal class, base line ECG and LVEF showed no statistically significant difference between the two groups. Angiographic parameters such as types of lesion and procedural complications shows statistically significant difference between two groups. In-hospital adverse cardiac events after the procedure was significantly higher in group II than group 1 (P<0.01). The mean duration of post procedural hospital stay was also significantly higher in group II than group 1 (P<0.01). At 30 days follow up there has no incremental risk of adverse cardiac events.
Conclusion: CTnl rise at peri procedural myocardial infarction level was observed in 37.5% of this study patient. This level of CTnl was significantly predictive of an increased risk of adverse cardiac events at hospital follow up.
Central Medical College Journal Vol 5 No 2 Jul 2021 PP 106-115
Pengaruh media pembelajaran quizizz terhadap kemampuan pemecahan masalah matematis dan kemandirian belajar pada siswa SMP
Authors: Astuti Astuti , Oktaviana Dwi , Firdaus Muhamad 
Published: August 2022

Penelitian ini menggunakan pendekatan kuantitatif metode penelitian eksperimen, dengan desain true eksperimental design. Latar belakang masalah dalam penelitian ini adalah Bagaimana Pengaruh Media Pembelajaran Kuis tentang Keterampilan Pemecahan Masalah Matematika dan Kemandirian Belajar dalam Materi Dan Fungsi pada Kelas VIII SMP Negeri 1 Sungai Raya adalah latar belakang permasalahan dalam penelitian ini. Jumlah sampel pada penelitian ini sebanyak 60 siswa, yang terdiri dari 30 siswa kelas eksperimen dan 30 siswa kelas kontrol. Tujuan umum yang ingin dicapai adalah untuk mengetahui Pengaruh Media Pembelajaran Quizizz Terhadap Kemampuan Pemecahan Masalah Matematis Dan Kemandirian Belajar Dalam Materi relasi dan fungsi Kelas VIII SMP Negeri 1 Sungai Raya. Lembar tes dan kuesioner adalah instrumen yang digunakan. Tes, kuesioner, dan wawancara adalah beberapa prosedur pengumpulan data yang digunakan. Berdasarkan hasil dari uji t dua sampel yang menggunakan nilai post-tes kelas eksperimen dan kontrol yaitu nilai uji t kemampuan pemecahan masalah matematis 4,39 > 1,67 dan kemandirian belajar 4,58 > 1,67. Paparan tersebut menetapkan bahwa penggunaan media pembelajaran Quizizz berdampak pada keterampilan dan kemandirian belajar matematika dalam kaitannya dengan materi relasi dan fungsi.
Diyabetik gebelerde glikolize hemoglobin A1c (HbA1c) düzeyi ile gebelik komplikasyonları arasındaki ilişki-Retrospektif vaka-kontrol çalışması
Authors: KAPLAN İsa 
Published: August 2022

Amaç: Diabetes mellitus (DM) tanılı gebelerde glikolize hemoglobin A1C (HbA1c) düzeyleri ile gebelikte meydana gelebilecek olan komplikasyonlar arasında ilişki olup olmadığını saptamak.
Gereç ve Yöntemler: Çalışmamız retrospektif vaka-kontrol çalışmasıdır. Ocak 2013 ve Aralık 2017 tarihleri arasında Aydın Adnan Menderes Üniversitesi hastanesinde yapılmıştır. Çalışmamız 321 hasta üzerinde yapılmıştır. Hastalarda HbA1C düzeyine göre komplikasyon oranlarına bakılmıştır.
Bulgular: HbA1c değerleri 66 gebede %4-5.9, 157 gebede %6-7.9 ve 91 gebede HbA1c≥%8’dir. Pregestasyonel DM tanılı gebelerde gestasyonel diabetes mellitus (GDM) tanılı gebelere kıyasla preeklampsi, fetal distres, preterm doğum, omuz distosisi ve yenidoğan hipoglisemisi daha sık saptanmıştır (p
Ammonium zincates as suitable catalyst for the room temperature cycloaddition of CO2 to epoxides
Authors: Panza Nicola , Alberti Matteo , Damiano Caterina , Caselli Alessandro 
Published: August 2022

We have recently shown that simple ammonium ferrates are competent catalyst for the cycloaddition reaction of CO2 to epoxides under moderate reaction conditions (T = 100°C, P(CO2) = 0.8 MPa). We report here that ammonium zincates of general formulae [TBA]2 [ZnX4] (TBA = tetrabutylammonium), simply obtained by treating an ethanolic solution of an appropriate zinc(II) salt with two equivalents of tetrabutylammonium halides, outperform ammonium ferrates in the synthesis of cyclic carbonates under milder reaction conditions (room temperature and atmospheric CO2 pressure). Using [TBA]2[ZnBr4] complex as homogeneous catalyst at 100°C and P(CO2) = 0.8 MPa a 52% conversion of styrene oxide with complete selectivity in styrene carbonate in just 15 min was observed, corresponding to a Turnover frequency (TOF) of 416 h−1. The same catalyst proved to be very active even at room temperature and atmospheric or very moderate CO2 pressures (0.2 MPa), with a quite broad range of substrates, especially in the case of terminal epoxides, with high selectivity towards cyclic carbonate products. The difference in reactivity of terminal and internal epoxides could be exploited using 4-vinylcyclohexene dioxide, where the endocyclic epoxide remained untouched when reacted at room temperature and the formation of the di-carbonate product was observed only at harsher conditions. A multigram scale conversion of propylene oxide was achieved (46 mmol) and the catalyst also proved to be recyclable (3 cycles) by distillation of the product and subsequent addition of fresh reagent, maintaining high conversion values and complete selectivity for propylene carbonate. This simple zinc-based catalytic system, which outperform the recently reported iron-based one by working at much milder conditions, could represent a valuable prospect in both laboratory and industrial scale, combining an inherent cheapness and synthetic easiness that should be deeply considered when the goal is to give value to a waste product as CO2.
The correlation of serum/plasma IGF-1 concentrations with obstructive sleep apnea hypopnea syndrome: A meta-analysis and meta-regression
Authors: He Jie , Li Xiaoyan , Yu Mi 
Published: August 2022

BackgroundObstructive sleep apnea hypopnea syndrome (OSAHS) is a common disease that has serious cardiovascular and metabolic effects. Insulin-like growth factor 1 (IGF-1) levels are reportedly reduced in patients with OSAHS; however, this is still a matter of debate. Therefore, we investigated the association between serum/plasma IGF-1 levels and OSAHS in this meta-analysis.MethodsWan Fang, Excerpta Medica dataBASE, Web of Science, China National Knowledge Infrastructure, VIP, PubMed, and other databases were searched for materials published in any language before April 2, 2022. Two researchers analyzed the studies for quality according to the Newcastle-Ottawa Scale. The acquired data were analyzed using Stata 11.0 and R 3.6.1 software. The effect size was estimated and calculated using standard mean differences and correlation coefficients. Moreover, a combined analysis was conducted using either a random- or fixed-effects model.ResultsUltimately, 34 studies met our inclusion criteria. Our findings revealed that the plasma/serum IGF-1 concentrations in patients with OSAHS was significantly reduced compared with those in healthy subjects. Subgroup analyses were performed according to OSAHS severity, ethnicity, age, body mass index, specimen testing method, and study design. The outcomes suggested that nearly all subgroups of patients with OSAHS had reduced serum IGF-1 levels. Disease severity and differences in ethnicity were identified as possible influencing factors of serum IGF-1 levels in patients with OSAHS in the meta-regression analysis, and no other factors were found to alter plasma/serum IGF-1 concentrations. Moreover, plasma/serum IGF-1 concentrations were negatively correlated with apnea-hypopnea index and oxygen desaturation index scores and positively associated with minimum oxygen saturation.ConclusionSerum/plasma IGF-1 concentrations in patients with OSAHS were greatly reduced compared with those of patients in the control group, and were negatively correlated with apnea-hypopnea index and oxygen desaturation index scores and positively correlated with minimum oxygen saturation.Systematic Review Registrationhttps://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022322738.
Identification of a novel histone phosphorylation prognostic signature in hepatocellular carcinoma based on bulk and single-cell RNA sequencing
Authors: Fan Lei , Xu Ling , Tian Shan , Zheng Xin 
Published: August 2022

BackgroundHepatocellular carcinoma (HCC) is the third leading cause of death in the world, characterized by high morbidity, poor prognosis and high mortality. Histone modifications regulate intracellular gene expression at the post-transcriptional level, and disturbances in the regulatory pattern of histone modifications at individual locus or across the genome can lead to tumorigenesis of HCC. In this study, we constructed a prognosis-related histone phosphorylation regulated (HPR) genes signature and elucidated whether HPR genes can predict overall survival in HCC patients.MethodsDifferentially expressed genes were screened using TCGA, ICGC and GEO databases, and a new risk signature was constructed by univariate Cox regression and Lasso regression analysis. Predictive nomograms were established by multivariate Cox regression of risk scores and clinical parameters, calibration curve and decision curve analysis were used to evaluate the models. The ssGSEA methods were used to determine the effect of risk scores on the tumor immune microenvironment. Data for HCC single-cell RNA sequencing (scRNA-seq) have been downloaded from Gene Expression Omnibus (GEO) to understand the role of HPR genes in tumorigenesis.ResultsOur analyses of nine HPR genes provided prognostic insights. Overall survival in the low-risk and high-risk groups was statistically higher, respectively (P&lt;0.001). Cox regression analysis revealed that the risk score is a significant predictor of HCC outcomes (HR=2. 2.62, 95%CI: 1.248-5.514, P=0.011). In addition, a nomogram combining risk scores with TNM stages was constructed and tested from calibration curves and decision curves (AUC=0.780). MHC-class-I genes, iDCs, Macrophages, Tfh, Treg, Th2 were overexpressed in the high-risk group.ConclusionHPR genes risk score is closely related to the prognosis of HCC, tumor immune process and tumor cell progression.