Radiation induced lichen planus - an uncommon side effect

Cutaneous lichen planus is classically characterized by violaceous, pruritic, planar papules and plaques, most commonly affecting the extremities. Lichen planus following radiation therapy is extremely rare and lichen planus following radiation therapy for prostate carcinoma has not been previously reported in the literature. We report a 66-year-old man who presented to the dermatology clinic with a symmetric pruritic eruption affecting the pelvic and gluteal region within two months of radiation therapy targeting the prostate and pelvic lymph nodes for prostate adenocarcinoma. The patient did not have a prior history of lichen planus. Physical examination demonstrated well demarcated, violaceous papules and plaques in a circumferential band-like distribution on the bilateral gluteal, lumbosacral, and pelvic region. In addition, he had a few discrete lesions on the calves and dorsal feet. Punch biopsy revealed an acanthotic epidermis with "saw-tooth" rete ridges and a lichenoid inflammatory infiltrate. A diagnosis of hypertrophic lichen planus was made, reinforcing the importance for clinicians to recognize radiation therapy as a risk factor for developing lichen planus despite no prior history of lichen planus

Kalaborasi Penggunaan Strategi Information Search (IS) Dengan Metode Resitasi Terhadap Hasil Belajar Biologi Siswa di SMP Negeri 4 Sungai Penuh

Bervariasinya strategi dan metode pembelajaran khususnya dalam proses pembelajaran biologi yang digunakan guru masih sangat terbatas. Dalam proses belajar mengajar guru masih menggunakan metode ceramah yang diselingi dengan diskusi dan tanya jawab. Penelitian ini adalah penelitian kuantitatif dengan metode eksperimen. Pupolasi yang digunakan seluruh siswa kelas VIII SMP Negeri 4 Sungai Penuh yang terdiri dari 7 kelas. Sampel yang digunakan 2 kelas, yaitu kelas VIII A dan VIII B. Teknik pengambilan sampel secara random sampling. Intrumen penelitian berupa tes yang terlebih dahulu dilakukan uji validitas, reliabelitas, daya pembeda, dan indeks kesukaran. Teknik analisis data adalah uji normalitas, uji homogenitas, dan uji hipotesis. Hasil yang didapatkan dari penelitian ini adalah hasil belajar siswa yang tidak menggunakan strategi Information Search melalui metode resitasi, nilai tertinggi adalah 70 dan terendah 40. Nilai rata-rata hasil belajar di kelas kontrol 54,47, sedangkan hasil belajar kelas eksperimen yang menggunakan strategi Infomation Search melalui metode resitasi lebih baik daripada hasil belajar kelas kontrol, dimana nilai tertinggi adalah 90 dan nilai terendah 60. Nilai rata-rata hasil belajar kelas eksperimen adalah 75,78. Hasil perhitungan thitung adalah sebesar 6,83 nilai ini lebih besar daripada ttabel 2,01. Ini menunjukan adanya perbedaan hasil belajar antara kelas eksperimen dan kelas kontrol. Karena thitung  > ttabel maka H1 diterim

POTENSI BIOAKARISIDA EKSTRAK DAUN MIMBA (Azadirachta Indica) DAN BUNGA CENGKEH (Syzygium Aromaticum) TERHADAP TUNGAU PENYEBAB PENYAKIT KREPES PADA JAMUR KUPING

Wood ear mushrooms  is commonly known as one of the cultivated edible mushrooms in Indonesia. The demand for this commodity is still steadily high and leads mushroom farmers to optimize its cultivation. For mushroom farmers in Yogyakarta, the prevalence of krepes disease which is caused by a group of species belongs to Acarina order is still high and leads to total loss of harvest. In order to diminish these Acarina species, the use of chemical acaricides is common because of their effectiveness in eradicating the pests despite their toxic effect to the environment. A strategy to provide environmental friendly acaricides which are  extracted from plants is therefore important. This research aimed to study the potency of neem leaves (Azadirachta indica) and clove flowers (Eugenia caryophyllata) extracts as bioacarisides for Acarina species as the causal agent of krepes disease. Neem leaves and cloves flowers were extracted using maceration and soxhlet extraction  methods, using 96% methanol as their solvents. Obtained crude extracts would then be subjected to phytochemical analysis using qualitative biochemical tests and GC-MS. The effectivity of extracts as bioacaricides were tested both in in vitro and field scale. In vitro tests showed that neem leaves extract and clove flower extract had LC50 value ​​of 0.22% and 0.48% respectively. Field scale test on mushroom baglogs showed that the efficacy of the neem leaves and clove flower to eradicate acarina were above 50%. Taken together, neem leaves and clove flower extracts are potential to be used as bioacaricides in mushroom farming.Wood ear mushrooms  is commonly known as one of the cultivated edible mushrooms in Indonesia. The demand for this commodity is still steadily high and leads mushroom farmers to optimize its cultivation. For mushroom farmers in Yogyakarta, the prevalence of krepes disease which is caused by a group of species belongs to Acarina order is still high and leads to total loss of harvest. In order to diminish these Acarina species, the use of chemical acaricides is common because of their effectiveness in eradicating the pests despite their toxic effect to the environment. A strategy to provide environmental friendly acaricides which are  extracted from plants is therefore important. This research aimed to study the potency of neem leaves (Azadirachta indica) and clove flowers (Eugenia caryophyllata) extracts as bioacarisides for Acarina species as the causal agent of krepes disease. Neem leaves and cloves flowers were extracted using maceration and soxhlet extraction  methods, using 96% methanol as their solvents. Obtained crude extracts would then be subjected to phytochemical analysis using qualitative biochemical tests and GC-MS. The effectivity of extracts as bioacaricides were tested both in in vitro and field scale. In vitro tests showed that neem leaves extract and clove flower extract had LC50 value ​​of 0.22% and 0.48% respectively. Field scale test on mushroom baglogs showed that the efficacy of the neem leaves and clove flower to eradicate acarina were above 50%. Taken together, neem leaves and clove flower extracts are potential to be used as bioacaricides in mushroom farming

Environmental Kuznets Curve and Pollution Haven Hypothesis

There has been limited empirical work done in the recent past to test the hypotheses of EKC and PH. Results obtained in this paper validate EKC hypothesis for total carbon dioxide emissions and carbon dioxide emissions from liquid fuel consumption from a panel of countries. This is robust to inclusion of additional covariates and division of countries on the basis of income. Financial development increases total emissions in high income countries whereas it decreases emissions in non high income countries in the long run. Trade to GDP ratio does not affect emissions significantly in case of high income countries. In case of non high income countries, trade to GDP ratio increases the emissions from solid fuel in the long run. Also in case of non high income countries increase in trade to GDP ratio increases total emissions and emissions from liquid fuel consumption in short run. Therefore, there is evidence in favour of pollution haven hypothesis in short run. It is logical as we expect the emissions shifting aspect of trade to be operative in short run whereas in long run the trade should be determined by comparative advantages

Sistem Informasi Akuntansi Penjualan dan Penerimaan Kas pada PT. Niaga Mandiri Lestari Medan

Setiap organisasi tidak terlepas dari masalah-masalah yang dapat menghambat perkembangan dan pertumbuban organisasi tersebut. Masalah itu antata lain masalah sistem infornasi yang merupakan faktor terhadap maju mundurnya suatu perusahaan, tanpa sistem informasi suatu organisasi yang modem tidak dapat direncanakan, mengkoordinasi dan mengawasi aktifitasnya yang kompleks. Untuk itu diperlukan suatu sistem akuntansi yang dapat menghasilkan informasi akuntansi yang baik. Agar didapatkan sistem informasi akuntansi yang baik, maka salah satu syaratnya adalah sistem akuntansi perusahaan tersebut yang merupakan salah satu elemen pokok dari pengawasan intern yang memadai. Dengan adanya sistem akuntansi yang direncanakan dengan baik, pimpinan perusahaan dapat mengawasi kekayaan pemsahaan dengan basil usaha, sehingga operasi perusahaan dapat ditentukan dengan lebih tepat. Sistem infoonasi akuntansi penjualan dan penerimaan kas adalah salah satu sarana yang dipakai manajer untuk mendapatkan informasi yang diperlukan untuk memanajemen perusahaan dan untuk menyusun laporan keuangan bagi pemilik, kreditur, dan pihak-pihak lain yang berkepentingan. Sarana tersebut akan berupa seperangkat peraturan, kebija.ksanaan, catatan-catatan, prosedur-prosedur, dan hubungan keorganisasian yang didesain untuk mengendalikan kegiatan serta sumber-sumber yang dimiliki perusahaan. Selain itu sistem informasi akuntansi penjualan dan penerimaan kas merupakan jaringan penghubung yang sistematis dalam menyajikan informasi yang berguna dan dapat dipercaya untuk membantu pimpinan dalam mencapai tujuan organisasi yang telah ditentukan. Dari uraian di atas jelaslah informasi melalui sistem informasi akuntansi sangat diperlukan oleh pimpinan perusahaan, terutama dalam hal untuk pengambilan keputusan dan sebagai alat pengendalian termasuk dalam hal pengendalian internal terhadap penjualan dan penerimaan kas

Problematika Dalam Pembelajaran Berbasis Virtual Learning Environment (VLE) Terhadap Siswa dan Guru SMA/MA Pada Materi Biologi Di Masa COVID-19

The research aims to find out the problem of Learning based on Virtual Learning Environment (VLE) for high school / MA students in biological materials in the COVID-19 era. This research is qualitative research with a fenomenology approach. Data collection techniques in research are observations, interviews, and questionnaires. The technique of ensuring the validity of data is triangulation. Data analysis techniques are data reduction, data presentation, and data verification. The results of the study can be concluded that SMA Negeri 12 Kerinci students have difficulty in understanding the concepts and learning materials and teachers has difficulty in practicing and evaluating learning outcomes, SMA Negeri 4 Kerinci students lack motivation and participation in learning and teachers have difficulty in making teaching materials, and MAS Koto Rendah students often experience internet network disruptions, students are less active in learning, and students have low motivation to learn virtually and teachers have difficulty in making teaching materials and explaining materials

Development of Ethnoscience-Based Critical Thinking Instrument in Physics Learning

This study aims to find out to produce a valid and reliable Project Based Learning integrated ethnoscience instrument in Newton's Law material. This type of research is a development research with 4D model. The research sample came from 2 physics education lecturers and physics teachers of SMA Negeri 4 Kerinci. Data collection techniques come from observation, interviews and validation questionnaires. The instrument in this study was a validation sheet using a likers scale. Data analysis is qualitative and quantitative analysis techniques with the help of the SPSS version 21 application. The results show the average validation value of ethnoscience instruments of 0.710 with very valid criteria and a reliability value of 0.845 high criteria. This finding explains that the ethnoscience instrument integrated with project-based learning is very feasible to be developed in learning physics material on Newton's La