bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penggunaan Two-Tier Multiple Choice Diagnostik Test untuk mengidentifikasi Miskonsepsi Siswa Kelas X SMAN 1 Tangerang Selatan Pada Materi Larutan Elektrolit dan Non Elektrolit
Authors: Lintang Lintang Rizkyta Ananda , Hari Suharto Hari 
Published: October 2022

Penelitian ini bertujuan untuk menilai tingkat pemahaman konseptual siswa dan mendiagnosis miskonsepsi siswa pada konsep larutan elektrolit dan non elektrolit. Instrumen pengukuran miskonsepsi yang digunakan adalah Two-Tier Multiple-Choice Diagnostic Test yang dikembangkan dengan menggunakan model Rasch. Penelitian ini dilakukan pada siswa kelas X SMAN 1 Tangerang Selatan yang berjumlah 187 orang dan melakukan wawancara kepada 40 siswa. Hasil penelitian ini menunjukkan bahwa masih ditemukan adanya miskonsepsi pada materi larutan elektrolit dan non elektrolit, yang ditunjukkan oleh sebanyak 28% siswa mengalami miskonsepsi pada level 1; 33% pada level 2; dan 35% pada level 3.
Kata kunci
Miskonsepsi, Larutan Elektrolit dan Non Elektrolit, Pemahaman Konseptual, Two-Tier Multiple-Choice Diagnostic Test.
UPAYA MENGATASI MISKONSEPSI HIDROLISIS GARAM MENGGUNAKAN PENDEKATAN CONCEPTUAL CHANGE DENGAN MODEL FLIPPED CLASSROOM
Authors: Linda Tiur linda 
Published: October 2022

Penelitian ini bertujuan untuk mengatasi miskonsepsi pada materi hidrolisis garam dengan pendekatan conceptual change dengan model flipped classroom. Penelitian dilaksanakan di kelas XI MIPA 3 SMA Kristen PENABUR Kota Wisata, Cibubur, dengan jumlah siswa sebanyak 33 siswa. Penelitian ini dilakukan melalui metode penelitian tindakan kelas model Kemmis dan Mc Taggart yang terdiri dari 4 komponen, yaitu: perencanaan, tindakan, pengamatan, dan refleksi. Penelitian dilaksanakan dengan tiga siklus. Data diperoleh dari hasil wawancara, observasi kelas, refleksi siswa, pertanyaan terbuka dan instrumen tes two tier dan esai yang telah divalidasi. Analisis data dilakukan melalui analisis data kualitatif melalui proses reduksi data, koding dan kategori untuk menggambarkan perubahan miskonsepsi siswa. Hasil penelitian menunjukkan bahwa siswa mengalami miskonsepsi pada konsep mengenai garam, sifat asam basa larutan garam dan menghitung pH larutan garam. Pendekatan conceptual change dengan model flipped classroom telah memfasilitasi siswa untuk mengubah miskonsepsi yang dialami melalui beberapa proses tahap konfrontasi terhadap konsep awal siswa. Dengan demikian Pendekatan conceptual change dengan model flipped classroom dapat digunakan untuk mengatasi miskonsepsi pada pembelajaran kimia khususnya materi hidrolisis garam.
PENGEMBANGAN LEMBAR KEGIATAN PESERTA DIDIK (LKPD) BERBASIS MODEL PEMBELAJARAN KOOPERATIF TIPE THINK-PAIR-SHARE (TPS) PADA POKOK BAHASAN STOIKIOMETRI DI KELAS X SMA/MA
Authors: Putri suci anugrah  
Published: October 2022

Pengembangan LKPD ini bertujuan untuk mengembangkan LKPD berbasis model pembelajaran kooperatif tipe Think-Pair-Share (TPS) yang valid berdasarkan penilaian validator dan praktis berdasarkan uji respon pengguna yaitu guru dan peserta didik. Penilaian yang valid didasari oleh 5 aspek kelayakan yakni kelayakan isi, kelayakan karakteristik model pembelajaran TPS, kelayakan kebahasaan, kelayakan penyajian dan kelayakan kegrafisan. Penelitian ini menggunakan jenis penelitian pengembangan (R&D) dengan tahapan 4D dan hanya dilakukan sampai tahap pengembangan uji coba terbatas. Instrumen penilaian yang digunakan adalah lembar validasi dan angket uji praktikalitas pengguna. Penilaian angket uji praktikalitas pengguna diberikan pada 2 orang guru dan 20 peserta didik dari SMAN 1 Pekanbaru dan SMAN 6 Pekanbaru. Hasil validasi LKPD dinyatakan valid dengan skor pada aspek kelayakan isi, karakteristrik model TPS, kebahasaan, penyajian dan kegrafisan berturut-turut sebesar 95,83%, 95%, 89,58%, 91,67% dan 95,83%. Sedangkan hasil uji praktikalitas pengguna dinyatakan praktis dengan memperoleh persentase skor rata-rata 92% oleh guru dengan kriteria sangat baik serta 88,03% oleh peserta didik dengan kriteria sangat baik.
Indonesia PENINGKATAN KETERAMPILAN PROSES SAINS MELALUI PRAKTIKUM KIMIA BERBASIS SKALA MIKRO MATERI STOIKIOMETRI
Authors: Supatmi Sri 
Published: October 2022

Penelitian ini bertujuan untuk mengetahui perbedaan keterampilan proses sains antara siswa yang mendapat perlakuan praktikum skala mikro dengan siswa yang mendapat perlakuan praktikum konvensional. Metode penelitian yang digunakan yaitu quasi experiment dengan design pre- and post test design. Penelitian ini dilaksanakan di SMA Santo Yakobus, Jakarta Utara pada semester ganjil tahun ajaran 2019-2020. Sampel penelitian sebanyak 40 siswa kelas XII IPA yang terdiri dari 20 siswa di kelas eksperimen dan 20 siswa di kelas kontrol yang dipilih dengan teknik purposive sampling. Kelas ekperimen diberi perlakuan praktikum skala mikro, sedangkan kelas kontrol diberi perlakuan praktikum konvensional. Kedua kelas diberikan pre-test dan post-test dengan menggunakan instrumen tes yang sama. Instrumen yang digunakan terdiri atas 10 soal uraian yang dibuat berdasarkan 8 indikator keterampilan proses sains dan telah diuji validitas dan reliabilitasnya (r = 0,919). Untuk melihat keterlaksanaan kegiatan praktikum maka dilakukan pengamatan dengan lembar observasi. Hasil penelitian menunjukkan bahwa terdapat perbedaan keterampilan proses sains antara siswa yang mendapat perlakuan praktikum skala mikro dengan siswa yang mendapat perlakuan praktikum konvensional, (thitung (5,412) > ttabel (2,528)). Praktikum skala mikro lebih efektif digunakan untuk meningkatkan keterampilan proses sains dibandingkan dengan praktikum konvensional. Hal ini berkaitan dengan pelaksanaan praktikum skala mikro yang dilakukan secara individu memberikan pengalaman langsung untuk membuktikan fakta, teori dan konsep yang telah dipelajari di kelas sehingga siswa mendapatkan pengetahuan secara mendalam.
Al-Saum: A Semantic Study of the Qur'an
Authors: Mansur Ridwan 
Published: October 2022

Istilah Al-ṣaum merupakan konsep dalam Alquran dengan berbagai derivasinya seperti al-ṣiyam, taṣumu, yaṣum, ṣiyaman, ṣiyām, ṣauman, ṣaimin. Pemaknaan ṣauman umumnya diartikan menahan diri dari hal-hal yang membatalkannya yaitu makan, minum dan hubungan sex dari mulai fajar (shubuh) sampai terbenam matahari (maghrib). Pernyataan seperti itu tentu saja masih menyisakan semacam ketidak-jelasan. Oleh karena itu penelitian ini bermaksud untuk menemukan ciri khas dari konsep al-ṣaum dalam Alquran, dengan metode yang digunakan ialah library research, pendekatan semantik Al-Qur’an karya Toshiku Izutsu dengan langkah-langkah pertama mencari makna dasar, kedua mencari makna relasional dan yang ketiga ialah mencari world view. Hasil dari penelitian ini menunjukkan bahwa makna kata s}aum ialah ialah menahan, meninggalkan, diam, berhenti, membuang dan mengekang. Pada masa pra Islam istilah s{iyam sudah dikenal, karena memiliki tradisi berpuasa beberapa hari yang dimulai pada pertengahan bulan Sya’ban untuk menyambut musim panas dan sarana mendekatkan diri kepada tuhan mereka. Adapun makna siyām pada masa pra Islam ialah diam dan menahan, tidak bergerak, ketika Islam datang terjadi perubahan makna ṣiyam yakni ketika masa jahiliah orang-orang berpuasa sebagai suatu cara untuk menghormati perbuatan untuk menghormati dan memuliakan sesuatu yang dianggap tinggi, ketika Islam datang terdapat penyempitan pemaknaan ṣiyām yakni sebagai saran untuk menjadi orang-orang bertakwa dan meningkatkan harkat martabat.World view dari ṣiyām ini ialah meningkatkan kualitas manusia dari segi fisik dan rohani, karena dengan fisik dan rohani yang kuat mampu memakmurkan bumi.
Designing Multi-Objective Electric and Thermal Energy Management System of Microgrid in the Presence of Controllable Loads and Electric Vehicles
Authors: Ghasemi Ehsan , Ranjbaran Amin , Pourhossein Javad 
Published: October 2022

Abstract
The global electricity network and natural gas have been developed over a broad geographical area worldwide. So far, various investigations have been performed in relation to energy infrastructures, however the combination of these systems with each other, which has many advantages, has not examined much. For this reason, electric and thermal loads have been interconnected by CHP units, and the combined study of power and heat has helped the operator to propose a more optimal structure for energy management. Therefore, integrating different energy carriers with each other and using the benefits of each one can increase the efficiency and reliability along with optimizing system performance. Such a capability in structure and operation requires a comprehensive framework to describe the effects of combining different energy carriers on the economic and environmental indicators of energy systems. In this paper, the microgrid has been modeled as an energy hub in order to combine different energy carriers and perform conversions in them to provide the optimal electric and thermal load required by the consumer. This structure has been created by managing the incoming carriers of gas, electricity and renewable energy and managing their conversion and storage in order to minimize the cost of energy supply and environmental pollutants. In order to improve the performance of the microgrid and help the operator of the microgrid, in addition to managing generation units, a responsive load management strategy and charging and discharging of electric vehicles have also been proposed. Epsilon constraints and fuzzy decision-making methods have been used to solve this problem. The results indicate that in the optimal state with the application of responsive loads, the total cost of operation is reduced by more than 6% and the cost of environmental pollutants is reduced by about 13%.
Extracting Wilson loop operators and fractional statistics from a single bulk ground state
Authors: Cian Ze-Pei , Hafezi Mohammad , Barkeshli Maissam 
Published: October 2022

Abstract
An essential aspect of topological phases of matter is the existence of Wilson loop operators that keep the ground state subspace invariant. Here we present and implement an \it unbiased \rm numerical optimization scheme to systematically find the Wilson loop operators given a single ground state wave function of a gapped Hamiltonian on a disk. We then show how these Wilson loop operators can be cut and glued through further optimization to give operators that can create, move, and annihilate anyon excitations. We subsequently use these operators to determine the braiding statistics and topological twists of the anyons, yielding a way to fully extract topological order from a single wave function. We apply our method to the ground state of the perturbed toric code and doubled semion models with a magnetic field that is up to a half of the critical value. From a contemporary perspective, this can be thought of as a machine learning approach to discover emergent 1-form symmetries of a ground state wave function. From an application perspective, our approach can be relevant to find Wilson loop operators in current quantum simulators.
Dense layer, microstructure and mechanical properties of Ti-6Al-4V alloy prepared by metal injection molding
Authors: Su Shaohua , Hong Zijian , Wu Yongjun , Wang Peng , Li Xiaobao , Wu Junwen , Huang Yu Hui 
Published: October 2022

Abstract
Metal injection molding (MIM) is one of the latest technologies for fabricating titanium-based products. However, there have been few systematic studies on the definition and generation mechanism of surface porosity of injection molded Ti-6Al-4V and its relationship with powder, process and mechanical properties so far. In this paper, MIM was selected to prepare Ti-6Al-4V alloy, and the effects of sintering and subsequent hot isostatic pressing (HIP) process on the microstructure and mechanical properties were investigated. The results indicate that Ti-6Al-4V alloy formed a dense layer after sintering because of the temperature gradient from surface to core. The thickness of dense layer, grain size, grain morphology, and grain orientation are the key factors that determining the mechanical properties of Ti-6Al-4V alloy. Under the condition of sintering at 1000℃ with HIP process, Ti-6Al-4V alloy formed a thick dense layer of 290 µm, equiaxed grains with the small average grain size of 16 µm, and a high proportion of high-angle grain boundaries of 88.9%. Due to the optimized microstructure, Ti-6Al-4V alloy exhibited excellent mechanical properties, with the tensile strength of 1067 MPa, yield strength of 997 MPa, and elongation of 17.5%. This approach can serve as a guideline for other MIM materials.
A mixotrophic preculture strategy enhances biomass and astaxanthin productivity of Chromochloris zofingiensis
Authors: Wang Yuxin , Sun Han , Wang Jia , Gu Ziqiang , Chen Feng , Mou Haijin , Yang Shufang 
Published: October 2022

Abstract
Background
Chromochloris zofingiensis is a competitive potential source of natural astaxanthin, as the alternative of Haematococcus pluvialis. However, its intracellular astaxanthin synthesis is inhibited under heterotrophic mode, which impedes the establishment of its ultra-high-density cultivation for astaxanthin industrial production.
Results
Preculture can provide a buffer for cells to acclimate drastic condition transformations and achieve a greater physiological state. An original mixotrophic preculture (MP) strategy established in this study successfully increased the heterotrophic biomass concentration of C. zofingiensis up to 121.5 g L− 1 in a 20 L fermenter, surpassing the highest high-density record. Meanwhile, the astaxanthin productivity achieved 0.111 g L− 1 day− 1, which is 7.3-fold higher than the best record of C. zofingiensis, and even exceeded that of H. pluvialis. The molecular mechanisms of C. zofingiensis under MP were further investigated using carbon partitioning model, transcriptome, and 13C tracer-based metabolic flux analysis. The results revealed that MP promoted protein degradation for lipid synthesis under heterotrophic cultivation. It also enhanced the expression of genes related to central carbon metabolism, thus providing sufficient energy for biomass accumulation. The metabolic flux to lipids and carotenoids under MP was elevated, providing abundant precursors for astaxanthin biosynthesis.
Conclusions
This study firstly proposed a MP strategy to regulated the physiological state of C. zofingiensis cells before fermentation, thus realized its heterotrophic high-density growth and increase the astaxanthin yield on a pilot scale. This strategy exhibits great potential to be utilized in astaxanthin industrial production and more microalgal related industry.
Analysis of Efficacy of Ascorbic Acid, Hydrocortisone and Thiamine as a Part Adjuvant Therapy of Sepsis and Septic Shock
Authors: Plotkin L. L. , Artamonov V. A. 
Published: October 2022

The objective: to analyze efficacy of ascorbic acid or its combination with glucocorticoids and thiamine on clinical outcomes in patients with sepsis and septic shock.Subjects and Methods. The literature search was carried out in the database of MEDLINE, Embase, and the Cochrane Library systems. It is limited to published articles from January 1, 2008 to March 1, 2022. The selection criteria were observational studies in patients over 18 years of age with septic shock, if they provide data on the use of ascorbic acid in the form of monotherapy or in combination with hydrocortisone and thiamine.Conclusion. The review includes 18 publications, including 3 meta-analyses on the use of ascorbic acid or its combination with hydrocortisone and thiamine in patients in the adjuvant therapy program for sepsis and septic shock. Clinical efficacy has been proven in 11 studies. However, 7 publications did not show global changes in the outcomes of sepsis and septic shock therapy compared to basic therapy. Currently, there is a need for further research.
Assessment of Amnesic Effect and the Depth of Hypnosis During Therapeutic Inhalation of Xenon-Oxygen Mixture
Authors: Lisichenko I. A. , Gusarov V. G. , Teplykh B. A. , Chayanov N. V. , Zamyatin M. N. 
Published: October 2022

The current literature lacks data on the incidence of intraoperative awakening during xenon anesthesia. This could be due to amnesia preventing memories of the intraoperative awakening.The objective: to determine the concentration of xenon in the xenon-oxygen mixture, which causes amnesia for events during inhalation in 100% of patients, and to make correlations with the depth of hypnosis as per Kugler scale.Subjects and Methods: 34 patients with chronic neurogenic pain who received 111 20-minute inhalations with concentration of xenon up to 50% were included in the study. Amnesia evaluation, EEG monitoring, and pain assessment on a visual analog scale (VAS) were performed.Results. Amnesic effect developed in 100% of patients at xenon concentration of 45%. On inhalation of xenon at concentrations of up to 50%, EEG changes did not exceed D1 grade on Kugler scale. The decrease in bispectral index (BIS) did not reach the level of deep sedation (Me 96.2%) at xenon concentration of 50%. The decrease in pain on VAS was approximately 60%.Conclusions. Xenon inhalations cause transient congradic amnesia at concentrations of 45% or more. The accuracy of the BIS monitoring readings may be reduced when using xenon in a monovariant. Inhalations of xenon-oxygen mixture in concentrations up to 50% showed good analgesic properties in the framework of combined therapy of chronic pain syndrome.
Diving Skill’s Coaching Upaya Pemberdayaan Para Relawan Search and Rescue di Surakarta
Authors: Lelono Sarjoko , Sabarini Sri Santoso , Riyadi Slamet 
Published: October 2022

Usaha untuk memberdayakan masyarakat agar mereka lebih kreatif dan produktif untuk meningkatkan taraf hidup gencar digaungkan oleh pemerintah. Pemberdayaan masyarakat merupakan proses pembangunan dengan inisiatif dari masyarakat untuk memulai kegiatan dalam upaya memperbaiki situasi dan kondisi yang dihadapi. Relawan adalah sebuah aktivitas yang dilakukan secara mandiri oleh personal maupun kelompok yang didasari atas kemauan sendiri untuk membantu sesama yang membutuhkan pada saat keadaan darurat atau bencana. Di luar kegiatan Search and Rescue (SAR), relawan tidak memiliki aktivitas lain yang produktif, untuk meningkatkan kesejahteraannya. Diving Skill’s Coaching adalah salah satu upaya untuk memberdayakan para relawan dengan membekali mereka keterampilan menyelam. Keterampilan tersebut dapat mendukung profesionalismenya sebagai relawan SAR, sekaligus mereka dapat memanfaatkannya dalam berbagai aktivitas lain yang bersifat produktif seperti sebagai life guard, pemandu wisata baik wisata pantai, sungai atau waduk, dan pekerjaan yang lain yang menuntut skillls tersebut. Diving Skill Coaching efforts to empower search and rescue volunteers in surakarta Abstract Efforts to empower the community to be more creative and productive to improve the standard of living of the people are intensively carried out by the government. Community Empowerment is a development process with the initiative of the community to start activities in an effort to improve the situations and conditions encountered. Volunteers are activities that are carried out independently by individuals or groups based on their own desire to help others who are in need during emergencies or disasters. Outside Search and Rescue (SAR) activities, volunteers do not have other productive activities, to improve their welfare. Diving Skills Training is one of the efforts to empower volunteers by providing their diving skills. These skills can support their professionalism as SAR volunteers, while they can utilize them in various other productive activities such as life guards, tour guides, beach, river or reservoir tours, and other occupations that demand these skills.
Analisis dan evaluasi kondisi fisik (kelincahan) atlet cabang olahraga unggulan Kabupaten Kebumen Provinsi Jawa Tengah
Authors: Mansur Mansur , Kurniawan Faidillah , Irianto Subagyo , Herwin Herwin , Nurfadhila Risti 
Published: October 2022

Artikel ini bertujuan untuk menganalisis dan mengevaluasi kualitas hasil latihan dengan tes dan pengukuran khususnya komponen biomotor kelincahan pada atlet cabang olahraga unggulan di Kabupaten Kebumen Jawa Tengah. Penelitian ini mengacu pada desain penelitian campuran Pada penelitian ini menganalisis data dengan statistik deskriptif terhadap kelincahan dimana rata-rata kelincahan pada subjek penelitian ini adalah 35 kali. Subjek dengan capaian terendah adalah 25 kali dan dengan capaian tertinggi 46 kali. Hal ini dapat dicermati pada capaian subjek penelitian dengan skala persentase menunjukkan bahwa capaian subjek penelitian terhadap kelincahan pada kategori baik 1 (satu) orang (4,17%), kategori cukup 3 (tiga) orang (12,50%), kategori kurang 9 (sembilan) orang (37,50%), kategori kurang sekali 11 (sebelas) orang (45,83%). Evaluasi dari analisis data dimana tim peneliti mencoba merekomendasikan beberapa contoh bentuk latihan untuk meningkatkan kelincahan yaitu lari zig-zag (zig-zag run) dan lari bolak-balik (shuttle run). Frekunsi latihan 3-4 kali per minggu dengan intensitas latihan 85-95% dengan 4 repetisi 3 set dan waktu istirahat 1:4 dan interval latihan 4 dengan irama latihan yang cepat. Analysis and evaluation of physical condition (agility) of athlete of special sport in Kebumen District Central Java Province AbstractThis article aims to analyze and evaluate the quality of the practice result through the test and measurement especially agility biomotor component in the superior sports branch in Kebumen Regency, Central Java. This research to reveal the data in this article refers to the mixing method research design (evaluation research). There is a statistic descriptive analysis of agility, which is known that the average of the agility of the research subject is 35. The subject lowest of the agility is 25, while the maximum of the agility reached is 46. The spread of research subject percentage showed that the research subject mostly has an the agility good category around 1 (one ) person (4,17%), average category around 3 (three) person (12,50%), much less around 9 (nine) person (37,50%), while the other 11 (elephent) is (45,83%) it includes the very low level. The evaluation of the data analysis form showed above is one of the research team recommendation in the practice to increase the agility is by zig-zag run and shuttle run exercises which are usually done in the form of pairs. The practice frequency is 3 – 4 times a week with practicing 80 – 90% intensity with 4 times repetition with the number of sets of 3 with a break time of 1: 4 and interval training 4 in a fast exercise rhythm.