bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydroxylamine Accelerates the Cycle of Fe(III)/Fe(II)-Cu(II)/Cu(I) to Enhance the Ability of Fe-Cu Bimetallic System to Activate Peroxymonosulfate to Degrade AO7
Authors: Zhang Ming , Zhang Kuo , Zhou Runjuan , Wang Jinpeng 
Published: December 2021

Abstract
In this study, a new type of iron/copper bimetallic combined with hydroxylamine (HA) activated peroxymonosulfate (PMS) was constructed to treat organic pollutants. Selecting the azo dye AO7 as the representative of organic pollutants, the new system can achieve nearly 100% degradation of AO7 within 5 minutes. The Fe(Ⅲ)/Cu(Ⅱ)/HA/PMS system mainly generates SO4·- to achieve the degradation of AO7 in acidic environment, while neutral and alkaline environments rely on ·OH. The presence of hydroxylamine accelerates the cycle of Fe(Ⅲ)/Fe(Ⅱ) and Cu(Ⅱ)/Cu(Ⅰ) in the system, and enhances the degradation ability of the system for organic pollutants. The addition of trace Cu(Ⅱ) (1 μM) enhances the ability of a single Fe(Ⅲ)/HA/PMS system to degrade AO7 in neutral and alkaline environments without causing secondary copper pollution. The common inorganic anions Cl- and NO3- in water have almost no effect on the degradation of AO7 in the system. The constructed Fe(Ⅲ)/Cu(Ⅱ)/HA/PMS system is an efficient and clean organic pollutant wastewater treatment process, which has very promising application prospects.
THz Super-Resolution Imaging in Transmission Technology by Using Butterfly and Pattern Device Samples
Authors: Yadav Nagendra Prasad , Hu Guozhen , Wang Yi-Fan 
Published: December 2021

Abstract
Recently there has been an increasing demand for terahertz technology especially in imaging. In the past few decades, the applications of terahertz (THz) imaging technology have seen significant developments in the fields of biology, medical diagnosis, food safety, and nondestructive testing. The medical and semiconductor industry has always attracted significant attention worldwide. In particular, the importance of real and perfect inspection technologies has been growing due to an increasing demand for improving the quality of life and developing industries. This paper presents the research of THz technology with super-resolution THz imaging in transmission mode on four types of different samples. We have reported transmission measurement at different THz frequency of each sample. The butterfly sample used super-resolution THz imaging. The THz super-resolution is obtained excellent at 1.8 THz, it is near about 1 micrometer. A good resolution images have been obtained. This new THz super-resolution techniques can apply in medical and security purposes. Further applications will be reported in coming papers.
Assessment of bio-availability of Cd, Pb, As and Tl via Gastric/Intestinal Digestion in Plants Collected From Different Kenyan Regions
Authors: MOGWASI RICHARD , Getenga Zachary Moronga , Olale Kennedy , Osunga Salome 
Published: December 2021

Abstract
In this study, total and bio-available levels of cadmium (Cd), Lead (Pb), arsenic (As) and Thallium (Tl) in 19 Kenya plants from two study sites (Manga and Borabu) were evaluated. ICP-MS technique was used to determine total Cd, Pb, As and Tl contents, while ultra-filtration and physiological extraction tests evaluated bio-accessibility of these elements. The plants had low concentrations; Cd (0.27±0.02 and 0.26±0.02), As (0.32±0.02 and 0.48±0.04), Tl (0.07± 0.02 and 0.06±0.01) and Pb (1.23±0.11 and 1.16±0.10) mg/kg in Manga and Borabu sites. However, sequential ultra-filtration showed more than 70% high molecular weight species (>10 kDa) predominated with Pb, Cd and Tl. The physiological based tests showed Cd, Pb, As and Tl extracted enzymatically were significantly higher (0.45±0.11, 0.46±0.12, 0.37±0.10 and 0.81±0.19µg/g) than aquatically extracted (0.32±0.07, 0.34±0.11, 0.26±0.08 and 0.50±0.27) µg/g, (p<0.05). Low bio-accessibility levels of these elements in medicinal plants justifies their use therapeutically.
Thoughts on Women Entrepreneurship: An Application of Market Basket Analysis with Google Trends Data
Authors: Semerci Anıl Boz , Özgören Ayşe Abbasoğlu , İçen Duygu 
Published: December 2021

Abstract
This paper focuses on the popularity and awareness of keywords in Google Trends data related to entrepreneurship of women in a global and cross-regional setting by using market basket analysis. Google Trends is one of the digital data platforms that provides a time series index of the volume of queries users enter into Google in a given geographic area. It is the most popular tool for gathering any information, and it has been used in several topics. Market basket analysis indicates items that appear/used together and the frequency of these appearances. Such technique is appropriate in finding hidden associations between items, which is also crucial in assessing individuals’ thoughts on a specific topic. This study contributes to the literature in terms of being the first study to use market basket analysis on Google trends data in the context of women’s entrepreneurship finding hidden associations between items, which is crucial in assessing individuals’ thoughts on a specific topic. The results of the analysis are interpreted through the lens of genderresponsive strategies, equality, efficiency and social justice in different country and region contexts.
Surging Role of Extracorporeal Membrane Oxygenation in Refractory ARDS Due COVID-19 and In-depth Review of Existing Applications
Authors: Matos Wanessa F , Maskey Upasana , Nagpal Shavy , Thakkar Keval , Mohammadi Asma , Shah Heeya , Panda Priyanka , Khan Nida , Bajgain Anjana , Murtaza Faryal 
Published: December 2021

Introduction: Extra Corporeal Membrane Oxygenation (ECMO) is a device applied to maintain cardiopulmonary support in patients in whom there is a failure of the cardiopulmonary function to maintain perfusion to vital organs. Previously, ECMO was used in pulmonary embolism, cardiogenic shock, myocarditis, and heart failure cases. Its use in refractory acute respiratory distress syndrome (ARDS) in coronavirus disease 2019 (COVID-19) has increased, but the data regarding its safety, efficacy, and mortality benefit remains unclear. The focus of our review is to further expand on these areas and outline the indication, techniques, and complications associated with its use.
Methods: We did an extensive search of various databases such as PubMed, Cochrane, ScienceDirect, and Jama Network and studied 41 papers, including free full articles such as systematic reviews, meta-analyses, and clinical trials published within the past five years.
Results: Implementation of ECMO is advantageous when the PaO2/FiO2 is in the range of 100 to 150 mmHg. For COVID-19 patients, the most appropriate approach is to drain from a femoral venous cannula and thread it to the inferior vena cava just 1-2cm below the cavoatrial junction. It was seen that the most common complication of ECMO use is coagulopathy. Limb ischemia had a variable incidence from 10 to 70% and is more common in venous-arterial ECMO.
Conclusion: ECMO is lifesaving in a highly selected group of patients to prolong survival, reduce complications and provide a good prognosis in terms of mortality. To prevent circuit thrombosis, anticoagulation is key, and understanding feasible intra-atrial communication sites, such as a patent foramen ovale or atrial septal defects, is beneficial to mitigate the risk of stroke and cutting down consequences of thromboembolism.
The use of blue-green infrastructure as a multifunctional approach to watersheds with socio-environmental vulnerability
Authors: Gomes Maria Vitória Ribeiro , Battemarco Bruna Peres , Guimarães Luciana Fernandes , Oliveira Antonio Krishnamurti Beleño de , Rutigliani Victória de Araújo , Cabral Felipe Manoel , Bezerra Ronan de Oliveira Pereira , Lourenço Ianic Bigate , Rezende Osvaldo Moura , Magalhães Paulo Canedo de , Miguez Marcelo Gomes , Veról Aline Pires 
Published: December 2021

Abstract
This article investigates how to make the implementation of blue-green infrastructure (BGI) more attractive to solve urban problems in densely occupied watersheds that lack flood control and environmental quality protection infrastructure. Considering the obstacles related to implementing multifunctional solutions in developing countries, measuring its co-benefits (in addition to flood control) may influence greater public and political acceptance. Thus, the paper uses a multifunctional design approach using the urban open space system and combining the blue-green and gray infrastructure. A hydrodynamic model was used to support flood mapping. This approach also increases the land value and the environmental quality of the urban spaces. Two quantitative aspects support this evaluation. The first one represents the land value increase as a positive effect, while the second one assesses the environmental quality of the urban space using the Environmental Quality Assessment Index (EQAI). The results obtained from the urban and environmental evaluation proved that blue and green corridors could promote multiple co-benefits for consolidated urban areas. The increased environmental quality and land value were only possible due to the combined use of BGI and gray infrastructure since BGI can add benefits that the gray infrastructure is not capable of providing.
Willingness of boarding school students in Tanzania to employ point-of-use water treatment: a case study
Authors: Felix Getrude A. , Ngasala Tula. M. , Mbatta Geophrey 
Published: December 2021

Abstract
Access to safe drinking water is a challenge for students in primary and secondary schools in Tanzania. Only 32.7% of primary and secondary schools in Tanzania have access to safe drinking water and the point-of-use water treatment is rarely used. The traditional water disinfection method by boiling is often limited in boarding schools due to cost and time constraints. The objectives were to assess the willingness and attitude of boarding school students toward the use of the alternative water treatment method and determine the quality of drinking water before and after the introduction of the new method. Chlorine tablets were used due to their availability, ease of use, cost, and effectiveness. Weekly evaluations on usage, performance, and acceptability of chlorine tablets were assessed on 42 randomly selected students over a 3-week period in parallel with water sampling and testing before and after using chlorine tablets. Before the introduction of chlorine, only 17% of the students were aware of chlorine tablets, and water sources tested positive for fecal coliform. After introducing the new method, there was a significant increase (p &lt; 0.05) in the attitude of students toward water treatment (100%), water quality (78%), and water consumption (67%). The work demonstrates the need to provide access to cost-effective household water treatment methods, especially in public schools that lack access to safe water.
Hubungan Faktor Internal dengan Perilaku Seksual Berisiko pada Remaja (Analisis SKAP Provinsi Bengkulu 2019)
Authors: Simanjuntak Betty Yosephin , Suryani Desri , Mahyudin Meriwati , Supardi Agus , Riastuti Frensi 
Published: December 2021

Latar Belakang: Perilaku seksual berisiko pada remaja semakin mengkhawatirkan, biasanya diawali dengan meraba, berpegang tangan hingga berciuman. Ada beberapa faktor yang memungkinkan terjadinya perilaku seksual ini baik internal maupun eksternal.Tujuan: Menganalisis faktor internal yang berkaitan dengan perilaku seksual berisiko remaja di Provinsi Bengkulu.Metode: Penelitian bersifat kuantitatif dengan menggunakan pendekatan cross-sectional pada 301 keluarga yang memiliki remaja berusia 10—24 tahun di wilayah Provinsi Bengkulu. Analisis data dilakukan secara deskriptif (univariat) dan bivariat dengan menggunakan uji chi square.Hasil: Perilaku seksual berisiko pada remaja diawali dengan adanya perilaku berpegangan tangan (83,4%), berpelukan (34,2%), ciuman bibir (15,6%), dan meraba/merangsang (3,3%), sebagian besar berusia 15—19 tahun dengan tingkat pendidikan SLTA, serta mayoritas tinggal di pedesaan. Faktor risiko umur berpengaruh terhadap perilaku berpegangan tangan (p=0,018), berpelukan (p<0,001) dan ciuman bibir (p<0,001). Jenis kelamin berpengaruh terhadap perilaku berpelukan (p<0,001), ciuman bibir (p=0,010) dan meraba atau merangsang (p=0,008). Pendidikan berpengaruh terhadap perilaku berpegangan tangan (p<0,001) dan ciuman bibir (p=0,010), sedangkan faktor risiko tempat tinggal diketahui berpengaruh terhadap perilaku ciuman bibir (p=0,030).Kesimpulan: Umur, jenis kelamin, tingkat pendidikan serta tempat tinggal menjadi faktor risiko terjadinya perilaku seksual remaja khususnya berpegangan tangan, berciuman, berpelukan, dan meraba/merangsang. Oleh karena itu, perlu dikembangkan media informasi tentang pentingnya kesehatan reproduksi dan faktor risiko perilaku seksual kepada remaja.
Employing lipase of candida antarctica (calb) as catalyst in the acetylation of para-aminophenol in aqueous and water-free medium
Authors: Ismail Hilda , Setiyani Evi Lande , Indriyawati Dwi Titus , Sudarmanto B. S. Ari 
Published: December 2021

Candida antarctica lipase B (CaLB) is one of lipase classes enzymes that has many advantages to be used in the process of synthesizing organic compounds. In this study, some experiments were conducted to examine the ability of CaLB as a catalyst in the para-aminophenol (PAP) acetylation to produce paracetamol as the result. Two types of research have been carried out, the first one is to utilize CaLB to catalyze acetylation of PAP in a water-free reaction medium, and the second one is to use CaLB as catalyst in aqueous medium through oxidative amidation reaction. Reaction in water free system was held in ethyl catalyst acetate as solvent that also act as the acyl donor, while in the aqueous medium, acetylacetone was used as acyl donor and ethyl acetate as source to produce peracid that will be used as oxidator. Analysis was done by HPLC and TLC densitometric to follow the amount of paracetamol produced. The results of CaLB-catalyzed acylation in water free system showed that the enzyme could accept PAF and ethyl acetate as a substrate in a nucleophilic substitution reaction, resulting in paracetamol as a product. However, the yield from the acylation of PAP is still not satisfactory. In the reaction in aqueous medium, CaLB has been proven to show its activity to catalyze the acylation of PAP with acetylacetone, as well as the reaction of peracid formation from ethyl acetate. The results show that this strategy can work well and give better yields than the other reaction in water-free medium.
Upaya Meningkatkan Kreativitas Anak Usia 5 – 6 Tahun Melalui Permainan Eksplorasi di PAUD Mulia Kecamatan Percut Sei Tuan Kabupaten Deli Serdang
Authors: Pratiwi Iis Damayanti , Nasriah Nasriah 
Published: December 2021

Permasalahan pada penelitian ini adalah: (1) Rendahnya kreativitas pada anak (2) anak masih kurang percaya diri dalam mengerjakan tugas, (3) anak merasa bosan, ngantuk pada saat mengerjankan tugas, (4) kurangnya penggunaan permainan eksplorasi dalam pembelajaran khususnya untuk meningkatkan kreativitas anak, (5) Sistem pendidikan yang lebih memfokuskan pada kemampuan akademik seperti membaca, menulis dan berhitung (calistung). Penelitian ini bertujuan untuk mengetahui perkembangan kreativitas anak usia 5-6 tahun dengan menggunakan permainan eksplorasi “bermain pasir” di PAUD Mulia Kec. Percut Sei Tuan Kab. Deli Serdang.Hasil observasi dan refleksi pada siklus I pertemuan 1 diperoleh nilai rata-rata 10,05%, anak yang tergolong dalam kemampuan kreativitas sangat baik 0 (0 %) , anak yang tergolong baik 0 (0 %) , anak yang tergolong cukup 15 (75%) , dan anak yang kurang 5(25,8%). Hasil pengamatan siklus II pertemuan II diperoleh nilai rata-rata 12,75%, anak yang tergolong sangat baik 0 (0%), anak yang tergolong baik 3 (15%), anak yang tergolong cukup 17 (85%), anak yang tergolong kurang 0 (0%). Pada siklus II pertemuan 1 diperoleh nilai rata-rata anak 16,95 %, anak yang tergolong sangat baik 7 (35%), anak yang tergolong baik 8 (40%), anak yang tergolong cukup 5 (25%,), dan anak yang tergolong kurang 0 (0%). Hasil pengamatan siklus II pertemuan II diperoleh nilai rata-rata anak 19,95 %, anak yang tergolong sangat baik 11(55%), anak yang tergolong baik 7 (35%), anak yang tergolong cukup 2 (10%), dan anak YANG tergolong kurang 0 (0%).Dan tidak ditemukan lagi anak yang tergolong kurang kreatif. Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa kegiatan permainan eksplorasi “bermain pasir” dapat meningkatkan kemampuan kreativitas anak. Oleh karena itu, kegiatan permainan eksplorasi “bermain pasir” dapat dijadikan salah satu alternatif dalam meningkatkan kreativitas anak usia 5-6 tahun di PAUD Mulia Kec. Percut Sei Tuan Kab. Deli Serdang
Upaya Mengembangkan Motorik Kasar Anak Usia 5-6 Tahun Melalui Permainan Bola Basket (Modifikasi) Di TK Putik Harapan Kecamatan Percut Sei Tuan Kabupaten Deli Serdang
Authors: Sari Devi Muliana , Marbun Sariana 
Published: December 2021

Rumusan masalah dalam penelitian ini adalah: “Apakah dengan melalui permainan bola basket (modifikasi) dapat mengembangkan motorik kasar anak usia 5-6 tahun di TK Putik Harapan” . Tujuan dari penelitian ini adalah untuk mengembangkan motorik kasar anak usia 5-6 tahun di TK Putik Harapan.Jenis penelitian yang digunakan penulis adalah penelitian tindakan kelas (PTK) dan terdiri dari 2 siklus dimana setiap siklus terdiri dari empat komponen yaitu: perencanaan, tindakan, observasi dan refleksi. Subjek penelitian adalah anak kelas B yang berjumlah 20 orang. Alat pengumpul data yang digunakan penulis adalah lembar observasi. Teknik Analisis data menggunakan rumus Pi=f/n x 100%.Hasil analisis siklus I diperoleh data bahwa sebanyak 10 orang (50%) anak yang tergolong cukup aspek pengembangan motorik anak, 10 orang (50%) anak yang tergolong baik perkembangan motorik anak. Dari data hasil observaasi tersebut sehingga perlui dilakukan pembelajaran melalui metode permainan modifikasi bola basket yang lebih baik pada siklus 2. Dari hasil analisis siklus 2 diperoleh hasil bahwa kemampuan motorik kasar anak meningkat yaitu bahwa jumlah anak yang kemampuan motorik kasar anak tergolong sangat baik motorik kasar anak bertambah menjadi 18 orang (1844.34%), anak yang tergolong baik menjadi 2 orang (155.54%).Dari hasil penelitian dapat disimpulkan bahwa permainan bola basket (modifikasi) dapat mengembangkan kemampuan motorik kasar anak usia 5-6 tahun di TK Putik Harapan Kecamatan Percut Sei Tuan Kabupaten Deli Serdang Tahun Ajaran 2016/2017
Pengaruh Media Audio Visual Gerak Terhadap Kemampuan Bercerita Anak Kelompok B Di TK ABA 06 Cabang Medan
Authors: Sari Ade Kurnia , Nurmaniah Nurmaniah 
Published: December 2021

Dalam penelitian ini yang menjadi masalah adalah kemampuan bercerita anak belum berkembang dengan baik.Karena kurangnya guru dalam menggunakan media pembelajaran yang bervariasi seperti penggunaan media pembelajaran media audio visual yang dimana media audio visual cukup banyak memberikan motivasi dalam kemampuan bercerita anak yang baik, karena mampu mengaktifkan kedua indera yaitu pendengaran dan penglihatan. Penelitian ini bertujuan untuk mengetahui pengembangan kemampuan bercerita anak di kelompok B di TK Aba 06 Cabang Medan.Jenis penelitian ini adalah penelitian post test only control design. Penelitian ini bertujuan untuk mengetahui pengaruh media audio visual terhadap kemampuan bercerita anak di kelompok B di TK Aba 06 Cabang Medan.Penelitian ini dilakukan dengan menggunakan dua kelas kelompok yang memiliki karakteristik yang sama yaitu kelas B1 dan kelas B2. Penentuan sampel kelas dilakukan secara acak (random) dengan jumlah sampel tiap kelas sebanyak 20 anak.Variabel bebas adalah penggunaan media audio visual sedangkan variabel terikat adalah kemampuan bercerita anak. Intrumen pengumpulan data yaitu pedoman observasi. Analisis data mengunakan uji-t. Dan observasi dilakukan pengobservasi dengan pedoman observasi yang telah disediakan. Dengan taraf nyata α = 0,05. Berdasarkan hasil analisis data diatas diperoleh rata-rata nilai pada kelas eksperimen 10,05 dengan nilai tertinggi 12 dan nilai terendah 8, sehingga pengembangan kemampuan bercerita anak pada kelas eksperimen memperoleh perbedaan yang signifikan. Sedangkan nilai rata-rata pada kelas kontrol 7,05 dengan nilai tertinggi 9 dan nilai terendah 5, sehingga pengembangan kemampuan bercerita anak pada kelas kontrol memperoleh perbedaan yang signifikan.Berdasarkan hasil tersebut hipotesis menyatakan bahwa pembelajaran menggunakan media audio visual berpengaruh secara signifikan terhadap pengembangan kemampuan bercerita anak yaitu dari hasil uji hipotesis diperoleh t hitung > t tabel, yaitu 8,62 > 1,72 pada taraf α = 0.05. Dengan demikian penggunaan media audio visual berperngaruh secara signifikan terhadap pengembangan kemampuan bercerita anak Kelompok B di TK Aba 06 Cabang Medan
Penggunaan Portofolio dalam Penilaian Perkembangan Motorik Halus Anak Usia Dini di PAUD Al Wafi Kecamatan Selesai Kabupaten Langkat
Authors: Wulan Dwi Septi Anjas 
Published: December 2021

Penelitian ini bertujuan untuk menganalisis pelaksanaan penilaian portofolio dalam penilaian perkembangan motorik halus anak di PAUD Al-Wafi Kecamatan Selesai Kabupaten Langkat. Penelitian ini menggunakan deskriptif kualitatif dalam penelitan deskripsi kuantitatif dan analisis kualitatif dalam satu kegiatan penelitian dengan subjek penelitian guru, dokumen pembelajaran dan hasil karya anak. Teknik pengumpulan data dengan analisis dokumen, pengamatan dan wawancara dan dokumentasi. Hasil penelitian menunjukkan bahwa guru di PAUD Al-Wafi Kecamatan Selesai Kabupaten Langkat sudah melakukan penggunaan penilaian portofolio dengan optimal dan baik. Dari analisis dokumen RPPH dan dokumen hasil karya yang dianalisis menjelaskan bahwa tahapan penilaian portofolio sudah dilaksanakan dengan baik. Penggunaan portofolio dalam penilaian perkembangan motorik halus anak dapat meningkatkan motivasi belajar anak dan meningkatkan proses penilaian yang efektif dikelas.
Метод Єгоричева доведення комбінаторних тотожностей з многочленами Нараяна
Authors: Ілаш Н. Б. , Самарук Н. М. 
Published: December 2021

У цій публікації наведено нові доведення двох комбінаторних тотожностей. Часткові випадки цих тотожностей містять числа та многочлени Нараяна і використовуються, зокрема, у класичній теорії інваріантів та дискретній математиці. Одна із доведених нами тотожностей є узагальненням задачі Стенлі.

Хоча існує велика кількість методів генерування нових комбінаторних тотожностей, на жаль, не існує єдиного універсального методу, який дозволив би довести будь-яку комбінатрону тотожність.
У сімдесятих роках минулого століття Георгієм Єгоричевим було розроблено декілька нових методів обчислення комбінаторних сум. У цій статті ми використовуємо один з методів Єгоричева - метод лишків (коефіцієнтів).