Article Per Year (5 Year)
p-Index From 2020 - 2025
1.235
P-Index
This Author published in this journals
All Journal KOMUNITAS: INTERNATIONAL JOURNAL OF INDONESIAN SOCIETY AND CULTURE Media Ilmu Keolahragaan Indonesia International Journal of Education Nexus Kedokteran Translasional Wellness And Healthy Magazine Narra J Physical Therapy Journal of Indonesia Journal of Social Work and Science Education
Muchsin Doewes
Faculty of Medicine, Sebelas Maret University
Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Education Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Veterinary

Published : 17 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 17 Documents
Search

 1   2 
Efek Diuresis Ekstrak Propolis pada Tikus Putih Jantan (Rattus Norvegicus) Fadityo, .; Doewes, Muchsin; ., Kisrini
Nexus Kedokteran Translasional Vol 1, No 2 (2012): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.205 KB)

Abstract

Background:Diuretics are medicine that increase the amount of  urine volume. Propolis has 150 compounds that have biological activities, one of the is flavonoid. Flavonoid known to has diuretic effect. Methods:The research is a laboratory experimental analytic study using randomized controlled trial done at Laboratory of Setia Budi University Surakarta in June 2012. The research subject is a number of 35 male white rats of Wistar strain. They were divided into five treatment groups, each group consists of seven rats. Simple random sampling is used for sampling technique. Before the treatment,  rats were adapted for 7 days and fasted for 48 hours but still provided with drinking water. Propolis extract was given orally. Group I was given aquadest 2.5 ml as negative control, group II was given hydrochlorothiazide 0.3 mg/2.5 ml as positive control, group III was given propolis extract at dose 30 mg/2.5 ml as dose I, group IV was given propolis extract at dose 60 mg/2.5 ml as dose II, and group V was given propolis extract at dose 120 mg/2.5 ml as dose III. Rats urine volume was measured every 6 hours for 24 hours. Results:Result of statistic calculation using Anova test with p < 0.05 shows that there is significant difference in total rats urine volume between group I, II, III, IV, and V. The Post-Hoc test result between group I compared with the others group was significant difference.Group II has the largest urine volume from all groups. Group III has the largest urine volume among the groups that given propolis extract. Group IV has larger urine volume than group V and group V has the least urin volume among the groups that given propolis extract. Conclusions:Through observing amount of urine volume and statistic calculation, it can be concluded that propolis extract has diuretic effect in the male white rats.The increase of propolis extract dose cause the decrease of urine volume. Keywords:Propolis extract, hidroclorotiazid, diuretic
Efek Diuresis Ekstrak Seledri (Apium graviolens L.) pada Tikus Putih Jantan (Rattus norvegicus) Evanti, Annisa Marsha; Doewes, Muchsin; Murti, Bhisma
Nexus Kedokteran Translasional Vol 2, No 1 (2013): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.207 KB)

Abstract

Background: Celery (Apium graviolens L.) is known has some biochemical substances effect such as kalium nitrat, manitol, and apigenin/flavonoid which can result diuretic effect. This research aims at finding out the diuretic effect of celery extract (Apium graviolens L.) on the male white rats (Rattus norvegicus). Methods: The research is a laboratory experimental analytic study using the Randomized Controlled Trial design. The research subject is a number of 30 male white rats of Wistar Strain, 200 grams of body weight. They were divided into five treatment groups randomly. Group I was given 3 mL aquadest as negative control, group II was given 0,32 mg/3 mL hydrochlorotiazid as positive control, group III was given 1,2g/3 mL celery extract as dose I, group IV was given 2,4g/3 mL celery extract as dose II, and group V was given 4,8g/3 mL celery extract as dose III. Rats urine volume was measured every 4 hours for 16 hours. Results:The result of statistic calculation using ANOVA test with p = 0.000 (p < 0.001) shows that there are significant differences in total rats urine volume between group I, II, III, IV, and V in every observation time. The Post-hoc test shows significant differences between negative control and three dosages of celery extract (p < 0.05), and the similarities between positive control and three dosages of celery extract (p > 0.05). Conclusions: Through observing amount of urine volume and statistic calculation, it can be concluded that there is diuretic effect of celery extract on the male white rats. Celery extract at dose 2,4 g/3 mL has the highest diuretic effect but celery extract at 1,2 g/3 mL has the optimum diuretic effect. Keywords: Celery extract, diuretic effect, hydrochlorotiazid
Pengaruh Ekstrak Etanol Belimbing Wuluh (Averrhoa bilimbi Linn.) dengan Variasi Dosis terhadap Kadar Testosteron Bebas Tikus Putih (Rattus norvegicus) Jannah, Nur Zahratul; Doewes, Muchsin; Kisrini, .
Nexus Kedokteran Translasional Vol 2, No 1 (2013): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.207 KB)

Abstract

Background: Belimbing wuluh (Averrhoa bilimbi Linn.) contains apigenin and luteolin as natural flavonoids, and antioxidants that may increase testosterone levels. Apigenin and luteolin increase testosterone levels by enhancing StAR (Steroidogenic Acute Regulatory) activity. Antioxidant protects cell from oxidative stress caused by ROS (Reactive Oxygen Species). This study aimed to evaluate the effect of variation dosage of Belimbing Wuluh (Averrhoa bilimbi Linn.) ethanolic extract on free testosterone levels in rats (Rattus norvegicus) Methods: This  was a pure experimental study with randomized post test only controlled group design. Samples were 24 male Wistar strain rats, 8-10 weeks aged and weighted ± 200 g on average. Samples were randomly divided into 4 groups, each group consists of six rats. Group K were given aquadest for 14 days. Group P1, P2, P3 were given ethanolic extract of belimbing wuluh orally at dose 57 mg/200 g body weight of rats, 114 mg/200 g body weight of rats, and 228 mg/200 g body weight of rats for 14 days. At 15th, blood were drawn from retroorbitalis plexus using microtubuler tube and free testosterone level were measured. Free testosterone levels of rats were measured by using ELISA (Enzyme-linked Immunosorbent Assay) method. Data were analyzed using one-way ANOVA test (α = 0.05). Results: Mean free testosterone levels in group K was 2.40 ± 2.02 ng/ml; in group P1 was 1.76 ± 1.01 ng/ml, in group P2 was 1.58 ± 0.53 ng/ml and in group P3 was 1.68 ± 0.64 ng/ml. Results for one-way ANOVA test showed no mean different (p=0.642). Conclusions: There were no effect between variation dosage of belimbing wuluh (Averrhoa bilimbi Linn.) ethanolic extract on free testosterone level in rats (Rattus norvegicus). Keywords: Averrhoa bilimbi Linn. extract, flavonoid, free testosterone level
Efek Analgesik Ekstrak Daun Kemangi (Ocimum sanctum L.) terhadap Tikus Putih (Rattus norvegicus) Agrensa, Riza Setya; Doewes, Muchsin; Samigun, .
Nexus Kedokteran Translasional Vol 2, No 1 (2013): Nexus Kedokteran Translasional
Publisher : Fakultas Kedokteran Universitas Sebelas Maret Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.207 KB)

Abstract

Background: Pain is a symptom of a disease that many felt by the people, the prevalence of pain in adults reach to 40% per day, while 89% felt the pain episode at least once a month. To overcome the pain that arises, people often use drugs is to reduce pain or analgesic. This research aims to find out whether there is an analgesic effect of kemangi extract (Ocimum sanctum L.) against the white mice (Rattus norvegicus). Methods: This research uses experimental methods to the post test only control group design. The research at the University of Setia Budi Surakarta performed. The subject of this research is 25 tail of a white mice (Rattus norvegicus), 3 months old with average weight 200 grams. First, subject adapted for 1 week, then not given to eat and drink for 18 hours before the treatment. The subject is divided into 5 groups. The negative control group was given aquades, while the positive control group was given aspirin. The third treatment group each got kemangi extract dosage of 225 mg/200 g body weight, 450 mg/200 g body weight, and 675 mg/200 g body weight. Pain induction method used is a medium hot plate, and then calculated the frequency jumps. The data obtained and analyzed by One-Way ANOVA and LSD. Results: The results of One-Way ANOVA test showed a significant difference between the five treatment groups. LSD test results showed a significant difference between the negative with the positive control group. Positive control group treated with the first and second doses showed a significant difference, but with the third dose treatment group showed no significant difference. This shows that only the third dose group has the analgesic effects. Conclusions: Of the three groups treated with kemangi extracts, only the third dose treatment groups shows analgesic effect on white mice. Keywords: kemangi extract, analgesic effects
Pengaruh Pendekatan Tradisional dan Pendekatan Pendidikan Gerak dalam Pembelajaran Penjasorkes terhadap Kebugaran Jasmani dan Kemampuan Memecahkan Masalah sejati, Restian Gigih; Kristiyanto, Agus; Doewes, Muchsin
Media Ilmu Keolahragaan Indonesia Vol 6, No 2 (2016): December 2016
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/miki.v6i2.8984

Abstract

Tujuan : (1) Mengetahui perbedaan pengaruhterhadap kesegaran jasmani antara siswa yang diajar dengan pendekatan pendidikan gerak dengan siswa yang diajar dengan pendekatan tradisional serta pengaruhnya kepada kelompok siswa kelas tinggi,kelompok siswa kelas rendah.(2) Mengetahui interaksi pendekatan pembelajaran pendidikan jasmani terhadap kesegaran jasmanikelompok siswa. (3) Mengetahui yang lebih efektif  memberikan kemajuanpendekatan tradisional atau pendidikan gerak.Penelitian ini eksperimental. Populasinya : siswa SD N 01,02 dan 03 Kemiri.160 sampel yang diambil (purposive sampling).Variabel bebas : Pendekatan tradisional,pendekatan pendidikan gerak. Variabel terikatnya :Kesegaran jasmani, dan memecahkan masalah.Pengumpulan data : Randomized group pre-test-post-test design. Analisis data menggunakan(ANAVA). Simpulan : (1) Ada perbedaan pengaruhkesegaran jasmani siswa diajarpendekatan pendidikan gerak dengan siswa diajar pendidikan tradisional dengan nilai signifikasi 0,0000 adalah 0,05 dari F=1.491 serta perbedaan pengaruhnya kelompok kelas tinggi dan kelompok kelas rendahdengan nilai signifikasi 0,0000 adalah = 0,05 F=1.7773 (3) Ada interaksi pendekatan pembelajaran pendidikan jasmani terhadap kesegaran jasmani sekelompok siswa .(4) Ada perbedaan pengaruhkemampuan memecahkan masalah antara siswa diajarpendekatan pendidikan gerak dengan siswa diajar pendekatan tradisional.(5) Terdapat interaksi pendekatan pembelajarn pendidikan jasmani terhadap kemampuan memecahkan masalah.Kelompok siswa pendekatan pendidikan gerakunggul dibandingkan pendekatan tradisional probabilitas 0,002 dari Tabel of between subjects effects Fhitung.Purposes: (1) To know the difference of influences towards physical fitness between students who were taught using movement education approach with ones who were taught using traditional approach as well as the impacts on high class student groups, low class student groups. (2) To know the interaction of physical education learning approach towards physical fitness of student groups. (3) To know which one is the most effective advancement traditional approach or movement education. This research is experimental. The population: students of SD N 01,02,03 Kemiri. 160 samples were collected (purposive sampling).  Free variables: traditional approach, movement education approach. Bound variables: physical fitness, and problem solving capabilities. Data collection: randomized group pre-test-post-test designs. Data analysis used (ANAVA). Conclusions: (1) There were different impacts between physical fitness of  students being taught using movement education approach with students being taught using traditional education with significance value 0.000 is 0.05 of F=1.491 as well as differences of impacts on the high class group and low class group with significance value 0.0000 is = 0.05 F=1.7773 (3) There were interactions of physical education learning approach towards the physical fitness of a group of students. (4) There were differences of impacts on the problem solving capabilities between students being taught using movement education approach and students being taught using traditional approach. (5) There were interactions of physical education learning approach towards problem solving capabilities. Movement education approach student group was more advanced than traditional approach probability 0.002 from the Table of between subjects effects Fhitung.
Pengembangan Prototipe Alat Bantu Latihan Mengayun (Swing Trainer) pada Atlet Woodball Amin, Anas Kholikul; Doewes, Muchsin; Purnama, Sapta Kunta
Media Ilmu Keolahragaan Indonesia Vol 7, No 1 (2017): July 2017
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/miki.v7i1.8743

Abstract

Tujuan penelitian untuk: (1) Menghasilkan desain prototipe alat bantu mengayun agar dapat digunakan dalam latihan mengayun bagi atlet woodball putra tingkat pemula dan lanjutan, (2) Menguji desain alat bantu mengayun dapat efektif digunakan atlet untuk meningkatkan keterampilan gerakan mengayun. Langkah-langkah yang digunakan dalam prosedur pengembangan adalah: (1) Potensi dan Masalah, (2) Pengumpulan Data, (3) Desain Produk, (4) Validasi Desain 2 ahli woodball dan 2 ahli peralatan, (4) Perbaikan Desain, (5) Uji Coba Produk 6 atlet, dan (6) Uji Coba Pemakaian 10 atlet. Produk akhir model alat bantu mengayun“Swing Trainer” yang dapat digunakan untuk latihan gerakan mengayun. Hasil validasi alat dari rubrik penilaian ahli woodball dan ahli peralatan mendapatkan skor 92 (tepat) sedangkan hasil efektivitas model model alat bantu mengayun didapatkan dari hasil penilaian ahli woodball pada uji coba skala kecil dan uji coba skala besar dengan mendapatkan skor rata-rata atlet dapat melakukan keseluruhan gerakan mengayun dan sebanyak 16 atlet menyatakan alat bantu mengayun efektif digunakan untuk latihan gerakan mengayun.The purpose to: (1) to generate a prototype design tools that can be used to swing in swing training for beginner and advanced men's level, (2) to test swing design tools can be effectively used to improve the skills of swing motion. Here are steps of procedure developmet: (1) Potention and problems, (2) Data/information collection, (3) product design, (4) Design validation 2 woodball expert and 2 tools expert, (5) Upgrading design, (6) Product experiment 6 athletes, and (7) Aplication experiment 10 athletes. The result of this research is a product, this final product is a tools swing “swing trainer” which can be used for swing training. The tool’s validation result is obtained from an assessment rubric from woodball expert and tools expert with the score 92 (exact). Meanwhile the efectiveness resulf a tools swing prototype is obtained from an assessment result by woodball expert in small scale experiment and large scale experiment. From those experiments, the average score of athletes can do the whole swing motion and there are 16 athletes clarify that tools swing is an effective tool to be used in swing movement practice.
Kerangka Dasar dan Struktur Kurikulum di Sekolah Menengah atas Keberbakatan Olahraga Huda, Khoirul; Kristiyanto, Agus; Doewes, Muchsin
Media Ilmu Keolahragaan Indonesia Vol 6, No 1 (2016): July 2016
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/miki.v6i1.9688

Abstract

Tujuan dari penelitian ini adalah (1) Untuk menemukan kebenaran tentang kerangka dasar kurikulum Sekolah Menengah Atas Keberbakatan Olahraga (2) Untuk menemukan kebenaran tentang struktur kurikulum Sekolah Menengah Atas Keberbakatan Olahraga. Lokasi penelitian di SMA Muhammadiyah 1 Klaten, SMA Negeri 1 Wonogiri, SMA Negeri 1 Slogohimo. Jenis penelitian yang digunakan adalah penelitian kualitatif. Teknik pengumpulan data dengan menggunakan teknik pengumpulan data dilakukan secara trianggulasi (gabungan), analisis data bersifat induktif, dan hasil penelitian kualitatif lebih menekankan makna daripada general. Hasil penelitian adalah (1) kerangka dasar kurikulum Sekolah Menengah Atas Keberbakatan Olahraga, mengacu pada Kurikulum 2013 baik secara filosofis maupun teoretis. (2) struktur kurikulum sekolah keberbakatan terdiri atas Kompetensi inti, Mata Pelajaran, Beban Belajar dan Evaluasi Pembelajaran. Kesimpulan bahwa SMA Keberbakatan Olahraga merupakan salah satu alternatif jalur pendidikan menengah yang diharapkan dapat memberikan peluang dan kesempatan bagi peserta didik untuk mengembangkan potensi akademik dan bakat olahraganya secara maksimal. SMA Keberbakatan Olahraga sebagai salah satu upaya yang dilakukan oleh Pemerintah dengan dukungan dari Pemerintah Daerah, serta kalangan akademisi dan Praktisi akan dapat berhasil, apabila seluruh kalangan dapat bersinergi secara positif mendukung kebijakan dan implementasi kurikulum SMA Keberbakatan Olahraga. 
PREDICTION OF PHYSICAL VARIABLE TO SQUAT LONG JUMP ACHIEVEMENT (A MULTIVARIATE CORRELATIONAL STUDY ON TRAINED STUDENTS OF A STATE SENIOR HIGH SCHOOL IN PEKALONGAN REGENCY) Abdurrachman, Abdurachman; Sugiyanto, Sugiyanto; Doewes, Muchsin
International Journal of Education Vol 10, No 2 (2018): February 2018
Publisher : UPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ije.v10i2.8861

Abstract

Achievement of squat long jump needs to be supported with several components that are divided into anthropometric elements and physical abilities. This study aims to determine the relationship and the extent to which squat long jump achievement can predict limb length, body mass index, body flexibility, and running speed. The subjects of this research were trained students of state senior high schools in Pekalongan Regency, with a total sample of 60 students. The independent variables in this research included limb length, body mass index, body flexibility, and running speed, whereas the dependent variables consisted of long jump and squat style achievement. The data were obtained through the test and measurement of each variable. This study used multivariate correlational method. Data were analyzed with normality test, linearity test, simple and multiple regression analysis, and hypotheses were tested with t-test and F-test. The results showed that limb length, body mass index, and flexibility had a positive relationship, whereas body mass index and running speed had a negative relationship with the squat long jump achievement. The prediction value of limb length was 0.027, body mass index -0.049, body flexibility 0.026, and running speed -0.234. The conclusion of this study is that there was a significant relationship among the variables, and limb length, body mass index, body flexibility and running speed can be predicted based on squat long jump achievement.
Expectation, Appreciation, and Public Perception to The Calisthenics Activity of Street Workout Community Hanggoro, Hari; Kristiyanto, Agus; Doewes, Muchsin
KOMUNITAS: International Journal of Indonesian Society and Culture Vol 10, No 2 (2018): Komunitas, September 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/komunitas.v10i2.13980

Abstract

The main objectives of this research are 1) What are the forms of appreciations given by the public to the calisthenics of street workout community,  2) What are the public expectations to the calisthenics of street workout community and 3) What is the public perceptions to the calisthenics of street workout community. This research was conducted at Enggal as the center of Lampung’s street workout community. This research uses descriptive qualitative method with naturalistic approach with the subject of this research are public which is in public space during sport activity. Data collection techniques such as observation, interviews, and documentation 1) The results of research to the calisthenics on street workout community are, the Community is able to provide a positive value, the public hope this community has more membership, and socialization of enhanced calisthenics, the addition of sports facilities in the public space for calisthenics. And the public expects full support from the government in terms of providing space and simplify community permissions. As well as street workout communities are able to provide an increase in the variety of exercises, contribute knowledge and building a broad concept of friendship and able to make the public maintain and improve health. 2) The public's appreciation of the calisthenics on the street workout community shows very positive things. And the public appreciates the way communities socialize with the public through official accounts in social media, and appreciate the concept of ‘Just For Fun’ in practice. The public also appreciates that the existing facilities are well maintained, and appreciate the contribution of the community in terms of events that are held, as well as full appreciation for being able to contribute to sports and public health and reduce negative activity among young people, 3) Public perceptions of the community are very good from the way people know that there are communities that introduce calisthenics sports, the public knows the street workout community as a community that uses its own weight in training and the public is able to describe the movements made in the exercise, how to do the movement correctly, able to explain aspects of ease in accessing information if you want to join the community, and knowing the community puts of affective values into  practice, able to recruit all levels of public, whether from gender differences, social strata, or age groups, as well as the public knows the street workout community has held activities in introducing of calisthenics. The presence of community in the public make the public have great expectations for this community in terms of raising awareness of the sport and the public greatly appreciatesall community activities in sports or social activities, and then all appreciation and expectation are due to the positive perception of public about street workout community of all aspects
Pengaruh Asupan Zat Gizi Harian dan Jogging Terhadap Perubahan Berat Badan pada Remaja Overweight di Surakarta Muharramah, Alifiyanti; Doewes, Muchsin; Tamtomo, Didik Gunawan
Wellness And Healthy Magazine Vol 1, No 2 (2019): August
Publisher : Universitas Aisyah Pringsewu (UAP) Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (69.412 KB) | DOI: 10.30604/well.39122019

Abstract

Overweight is an unbalanced nutritional status due to excessive nutritional intake resulting in an energy imbalance that can cause health problems. More nutrients that arise in adolescence tend to continue into adulthood and the elderly. Nutritional status in adolescents can indicate the level of nutritional problems that occur, namely problems regarding daily intake in adolescents. Fulfillment of daily care in adolescents impacts on body weight so it needs to be considered related to the expenditure of energy required, one form that can be done can be in the form of physical training in the form of aerobic exercise such as jogging. Jogging is included in cardio or aerobic exercise which has the benefit of increasing fitness and burning fat in the process of weight loss. This research is a type of analytic research with quasi experimental design with a pre-post test control group design. This research was conducted in the presence of a treatment group and a control group. This research was conducted for 12 weeks, namely in August-September 2017. Based on statistical tests conducted using the One Way Anova test with Post Hoc Games - Howell, showed that in the treatment group that is the regulation of daily nutrient intake (carbohydrates, fats, fiber) with jogging compared to the control group ie breakfast consumption in students without jogging exercises can affect changes in body weight that is indicated by a decrease in body weight in students, this can be seen from the value of p 0.032 which indicates a significant change in weight loss in students.The effect of the breakfast consumption control group with the treatment group daily intake of food and jogging on weight loss in overweight adolescents.
Co-Authors . Fadityo . Kisrini . Samigun Abdurrachman, Abdurachman Agus Kristiyanto Alifiyanti Muharramah ANAS KHOLIKUL AMIN, ANAS KHOLIKUL Annisa Marsha Evanti Aulia Ramadhani Bambang Purwanto Bhisma Murti Didik Gunawan Tamtomo Dono Indarto Ekawati, Febriani Fajar Eti Poncorini Pamungkasari Hari Hanggoro, Hari Hartono Hartono Khoirul Huda Kisrini . M. Furqon Hidayatullah, M. Furqon M.Pd S.T. S.Pd. I Gde Wawan Sudatha . NINGRUM, TYAS SARI RATNA Nur Zahratul Jannah Pamungkasari, Eti P. Paramasari Dirgahayu pasa, chusairil Restian Gigih sejati, Restian Gigih Risya Cilmiaty, Risya Riza Setya Agrensa Sapta Kunta Purnama Shanti Listyawati Sinu Andhi Jusup, Sinu Andhi Slamet Riyadi Soetrisno Soetrisno SUGIYANTO Syahmirza Indra Lesmana Syetiawinanda, Amriansyah Utama, Dimas Duta Putra Vitri Widyaningsih