bluuebunny/crossref_metadata_2025 huggingface dataset:
SIFAT FISIK MEKANIK PAPAN PARTIKEL DARI SERAT KULIT BATANG SAGU (Metroxylon spp) BERDASARKAN RASIO ASAM SITRAT-SUKROSA
Authors: Nurhaida Nurhaida , Wati Nova Fatma , Setyawati Dina
Published: December 2022

This particle board is made of sago stem bark fibers, which are processing wastes using sucrose citric acid without formaldehyde emission. The purpose of the study was to test the physical and mechanical properties of sago stem bark fiber particleboard based on citric acid and sucrose ratios to obtain optimal particle board physical and mechanical properties. Particle boards are made using sago stem bark fibers with a length of 10 cm and use citric-sucrose acid ratio (0/100, 25/75, 50/50, 75/25, 100/0), particle boards are made with a size of 30 cm x 30 cm x 1 cm with a target density of 0.8 gr/cm3. The particle board is pumped hot at 160ºC for 20 minutes with a pressure of 25 kg/cm². Particle board testing refers to the JIS A 5908-2003 type 8 standard. The results showed that the optimal particle board made with citric acid:sucrose ratio (25:75) with a moisture content of 7.98%, thickness swelling 48.87%, water absorption 105.78%, MOE 20,011.34 kg/cm², MOR 214.41 kg/cm², internal bonding strength 1.33 kg/cm² and firmness of screw grip 74.1982 kgKeywords: citric acid, sucrose, particle board, sago stem bark fibers, mechanical physiqueAbstrakPapan partikel ini terbuat dari serat kulit batang sagu yang merupakan limbah hasil pengolahan sagu dengan menggunakan perekat asam sitrat sukrosa tanpa emisi formaldehida. Tujuan dari penelitian ini adalah untuk menguji sifat fisik dan mekanik papan partikel serat kulit batang sagu berdasarkan rasio asam sitrat dan sukrosa dan untuk mendapatkan sifat fisik dan mekanik papan partikel yang optimal. Papan partikel dibuat menggunakan serat kulit batang sagu dengan panjang 10 cm dan menggunakan rasio asam sitrat-sukrosa (0/100, 25/75, 50/50, 75/25, 100/0), papan partikel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,8 gr/cm3. Papan partikel dikempa panas pada suhu 160 oC selama 20 menit dengan tekanan 25 kg/cm2. Pengujian papan partikel mengacu pada standar JIS A 5908-2003 Type 8. Hasil penelitian menunjukan bahwa papan partikel optimal yang dibuat dengan rasio asam sitrat: sukrosa (25:75) dengan kadar air 7,98%, pengembangan tebal 48,87%, daya serap air 105,78%, MOE 20.011,34 kg/cm², MOR 214,41 kg/cm², internal bonding 1,33 kg/cm² dan kuat pegang sekrup 74,1982 kg Kata kunci: asam sitrat, sukrosa, papan partikel, serat kulit batang sagu, fisik mekanik
UJI EFEKTIVITAS CUKA ORGANIK PADA KULTUR MONOSENIK ISOLAT Glomus mosseae
Authors: Ilham Ilham , Ekamawanti Hanna Artuti , Oramahi H A
Published: December 2022

This study aimed to evaluate the effectiveness of organic vinegar on the monoxenic culture of Glomus mosseae isolates. This study used a completely randomized design (CRD), with treatments, namely the types of organic vinegar, NPK fertilizer (25-5-25), and without fertilization with three replications for each treatment. The number of AMF spores and AMF colonization in roots were observed after culturing. The results showed that the organic vinegar (rubberwood vinegar, fern root vinegar, peat vinegar) at a dose of 1.5 mL/L. was applied as a stimulant in the monoxenic culture G. mosseae isolates, did not differ significantly in stimulating spore production. Compared to commercial NPK fertilizer, this indicates that organic vinegar also has the potential to be used as a substitute for commercial NPK fertilizers. Further research is needed to obtain an effective dosage of organic vinegar above 1.5 mL / L as a stimulant in producing AMF inoculum. Keywords: arbuscular mycorrhizal inoculum, fern-root, peat, rubberwood, vinegar               AbstrakPenelitian ini bertujuan untuk mengevaluasi efektivitas cuka organik terhadap kultur monoksenik isolat Glomus mosseae. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), dengan perlakuan yaitu jenis cuka organik, pupuk NPK (25-5-25), dan tanpa pemupukan dengan tiga ulangan untuk setiap perlakuan. Jumlah spora FMA dan kolonisasi FMA pada akar diamati setelah pembiakan. Hasil penelitian menunjukkan bahwa cuka organik (cuka kayu karet, cuka akar pakis, cuka gambut) dengan dosis 1,5 mL / L. diaplikasikan sebagai stimulan dalam kultur monoksenik isolat G. mosseae, tidak berbeda nyata dalam merangsang produksi spora. Dibandingkan dengan pupuk NPK komersial, hal ini menunjukkan bahwa cuka organik juga berpotensi untuk digunakan sebagai pengganti pupuk NPK komersial. Diperlukan penelitian lebih lanjut untuk mendapatkan dosis efektif cuka organik di atas 1,5 mL / L sebagai stimulan dalam memproduksi inokulum FMA.                         Kata kunci: inokulum mikoriza arbuskular, akar pakis, gambut, kayu karet, cuka
KEPADATAN POPULASI KEKAH NATUNA (Presbytis natunae) DI HUTAN MASYARAKAT DESA MEKAR JAYA KABUPATEN NATUNA, KEPULAUAN RIAU
Authors: Fahsyuliardi Nofly , Prayogo Hari , Erianto Erianto
Published: December 2022

Kekah Natuna (Presbytis natunae) is an endemic primate of Natuna Regency which’s scattered in the forests of Bunguran Besar Island and one of them is scattered in the community forests of Mekar Jaya Village. Kekah Natuna (Presbytis natunae) is currently not included in the list of protected animals in regionally and internationally, even though this primate is endemic and has become an icon of Natuna Regency. This study aims to record the population density of Kekah Natuna in the Forest of Mekar Jaya Village Community, Natuna Regency, Riau Islands. This study used a survey method with data collection techniques using line sampling (path). The observation path is placed purposively in the direction of the wind with the determination of the starting point of the path determined purposively. Observations were made in the community forest of Mekar Jaya Village with an area of 1236.17 Ha in 3 types of vegetation cover, namely mixed plantation, rubber plantation and nipah. The population density of Kekah Natuna (Presbytis natunae) in the community forest of Mekar Jaya Village was obtained at 0.75 individuals / ha with an estimated population of 928.2 individuals.Keywords: endemic, Population, Presbytis natunae, Purposive samplingAbstrakKekah Natuna (Presbytis natunae) merupakan primata endemik Kabupaten Natuna yang tersebar di hutan-hutan Pulau Bunguran Besar dan salah satunya tersebar di hutan masyarakat Desa Mekar Jaya. Sampai saat ini Kekah Natuna belum termasuk dalam daftar satwa yang dilindungi di tingkat nasional maupun internasional, padahal primata ini merupakan primata endemik dan telah menjadi ikon bagi Kabupaten Natuna, selain itu keberadaan Kekah Natuna pada saat ini berada dalam keadaan terancam karena maraknya perburuan satwa endemik ini. Penelitian ini bertujuan untuk mendata kepadatan populasi Kekah Natuna di Hutan Masyarakat Desa Mekar Jaya Kabupaten Natuna Kepulauan Riau. Penelitian ini dilakukan dengan menggunakan metode survei dengan teknik pengumpulan data menggunakan jalur transek yang diletakkan secara purposive searah dengan arah mata angin dengan penentuan titik awal jalur pengamatan juga ditentukan secara purposive. Luas hutan masyarakat  yang menjadi lokasi penelitian  adalah 1.236,17ha, dan pengamatan dilakukan pada tiga tutupan lahan yang berbeda yaitu kebun campuran, kebun karet dan nipah. Dari pengamatan ini didapatkan kepadatan populasi kekah natuna (Presbytis natunae) sebesar 0,75 individu /ha dengan perkiraan populasi sebesar 928,2 individu.Kata kunci: endemic, populasi, Presbytis natunae, purposive sampling
ETNOZOLOOGI UNTUK RITUAL ADAT MASYARAKAT DAYAK KANAYATN DI DESA ANTAN RAYAN KECAMATAN NGABANG KABUPATEN LANDAK
Authors: Dirhamsyah M , Elia Nova
Published: December 2022

The people of Kalimantan from various tribes use animals for their daily needs such as consumption needs, traditional rituals, medicine, decoration, supernatural and commercial activities, equipment and others. One of the indigenous tribes in West Kalimantan is the Kanayatn Dayak tribe located in Antan Rayan Village, Ngabang District, Landak Regency. The use of animals by the Kanayatn Dayak Community has become a hereditary culture from their ancestors. The purpose of this study was to record the types of animals used for traditional rituals and how to use them by the Kanayatn Dayak community. This study uses data collection methods, namely by field surveys, interviews and direct observations in the field, for data collection by snowball sampling technique, namely by determining respondents to then determine other respondents based on information from previous respondents, and so on. The results showed that the number of animals used for traditional rituals by the Kanayatn Dayak people in Antan Rayan Village, Ngabang District, Landak Regency, were 16 species of animals from 11 families. Animal parts used for traditional rituals are the whole body, head, blood, feathers, bile, and oil. The main customs that must be used by the Kanayant Dayak community are pork, free-range chicken, palm wine, and flour with the distribution of rice mixed with chicken blood. Keywords: Ritual Custom, Kanayatn Dayak, EthnozoologyAbstrakMasyarakat Kalimantan dari berbagai suku menggunakan hewan untuk kebutuhan sehari-hari seperti kebutuhan konsumsi, ritual adat, obat-obatan, dekorasi, kegiatan supranatural dan komersial, peralatan dan lain-lain. Salah satu suku asli di Kalimantan Barat adalah Suku Dayak Kanayatn yang terletak di Desa Antan Rayan, Kecamatan Ngabang, Kabupaten Landak. Pemanfaatan satwa oleh Masyarakat Dayak Kanayatn sudah menjadi budaya turun temurun dari nenek moyang mereka. Tujuan dari penelitian ini adalah untuk mendata jenis-jenis satwa yang digunakan untuk ritual adat dan cara pemanfaatannya oleh masyarakat Dayak Kanayatn. Penelitian ini menggunakan metode pengumpulan data yaitu dengan cara survey lapangan, wawancara dan observasi langsung di lapangan, untuk pengumpulan data dengan teknik snowball sampling yaitu dengan cara menentukan responden untuk kemudian menentukan responden lain berdasarkan informasi dari responden sebelumnya, dan seterusnya. Hasil penelitian menunjukkan bahwa jumlah satwa yang digunakan untuk ritual adat oleh masyarakat Dayak Kanayatn di Desa Antan Rayan Kecamatan Ngabang Kabupaten Landak sebanyak             16 jenis satwa dari 11 famili. Bagian satwa yang digunakan untuk ritual adat adalah seluruh tubuh, kepala, darah, bulu, empedu, dan minyak. Adat pokok yang wajib digunakan oleh masyarakat Dayak Kanayant adalah babi, ayam kampung, tuak, dan tepung dengan pembagian nasi campur darah ayam.  Kata Kunci: Ritual Adat, Dayak Kanayatn, Etnozoologi
IDENTIFIKASI JENIS BAMBU (POACEAE) DI HUTAN BUKIT SEHAK DESA AUR SAMPUK KECAMATAN SENGAH TEMILA KABUPATEN LANDAK
Authors: Anam Khairul , Idham M , M Iskandar A
Published: December 2022

Bamboo is a kind of grass plant with cavities and internodes in the stem. This plant is very useful for the economic life of the Indonesian people, so research is needed on identifying the types of bamboo found in the area of Bukit Sehak Forest, Aur Sampuk Village, Sengah Temila District, Landak Regency. The method used in this study uses a sampling technique by making a research path map. Based on the research results obtained 6 types of bamboo from 3 different genus differen that is: Dendrocalamus, Gigantochloa, Schizostachyum with Bamboo species Tareng'k (Gigantochloa Rabusta), Bambu Reed (Gigantochloa Bului), Munti'k Bambu (Schizostachyum Sp), Bamboo Batung'k (Gigantochloa Rabusta), Bamboo Reed (Gigantochloa Bului), Munti'k Bamboo (Schizostachyum Sp), Bamboo Batung'k (Gigantochloa Rabusta), Bamboo Reed (Gigantochloa Bului), Munti'k Bamboo (Schizostachyum Sp), Bamboo Batung'k (Gigantochloa Rabusta) Dendrocalamus Asper), Bamboo Pasa'k (Schizostachyum Silicatum) and Bamboo Anyang (Gigantochloa Pseudoarundinacea).Keywords: Bamboo, Dendrocalamus, Gigantochloa, Schizostachyum, Sehak Hill Forest,AbstrakBambu merupakan tanaman jenis rumput rumputan dengan rongga dab ruas dibatangnya. Tanaman ini sangat bermanfaat bagi kehidupan ekonomi masyarakat Indonesia, sehingga diperlukan penelitian tentang identifikasi jenis bambu yang terdapat di kawasan Hutan Bukit Sehak Desa Aur Sampuk Kecamatan Sengah Temila Kabupaten Landak. Metode yang digunakan dalam penelitian ini adalah metode survey dengan cara pembuatan jalur penelitian. Bedasarkan hasil penelitian dilapangan 6 jenis bambu dari 3 genus yang berbeda yaitu Dendrocalamus, Gigantochloa, Schizostachyum dengan spesies bambu tareng (Gigantochloa Robusta), Bambu Buluh (Gigantochola Bului), Bambu Muntik (Schizostachyum Sp), Bambu Batung (Dendrocalamus Asper), Bambu Pasak (Schizostachyum Silacatum) dan Bambu Anyang (Gigantochola Pseudoarundinacea).Kata kunci: Bambu, Dendrocalamus, Gigantochloa, Schizostachyum, Hutan Bukit Sehak
IDENTIFIKASI JENIS FAMILI ZINGIBERACEAE DI KAWASAN KEBUN RAYA SAMBAS KABUPATEN SAMBAS KALIMANTAN BARAT
Authors: Erwinsyah Adi , Tavita Gusti Eva , Widiastuti Tri
Published: December 2022

Plant identification includes or establishes the identity of a plant. Zingiberaceae is a perennial herba,  which is the rhizome has an aromatic odor, Zingiberaceae has that swell like tubers with thick roots, and often have spaces filled with evaporated oil. Sambas Botanical Gardens area is a secondary forest designated as a conservation area, ex-situ collection of plants, animals in situ, swamp forest, lowland forest and riparian. The purpose of this study was to obtain data on the types of the Zingiberaceae family and the benefit of this research is to provide information on the types of the Zingiberaceae family in the Sambas Botanical Gardens. This research uses survey and flora exploration methods by observing each forest type plot. Plot measuring 40x100 m. The results of this study found 10 species consisting of 7 different genera with a total of 33 individuals, the species found consisted of: Alpinia galanga (L.) Willd, Amomum coriaceum R.M Sm, amomum sp, Elettariopsis curtisii Bak, Etlingera nasuta (K.Schum.) R.M.Sm, Globba tri color Ridl, Globba sp, Plagiostachys sp, Zingiber multibracteatum Holtum, Zingiber sp, then 7 genera were found consisting of: Alpinia, Amomum, Elettariopsis, Etlingera, Globba, Plagiostachys and Zingiber.Keywoards : Identification, Sambas Botanical Garden, ZingiberaceaeAbstrakIdentifikasi tumbuhan berarti mengungkapkan atau menetapkan identitas suatu tumbuhan. Zingiberaceae merupakan terna berumur panjang, ciri khas dari famili ini adalah pada rhizom yang memiliki  bau aromatik. Zingiberaceae mempunyai rhizom yang membengkak seperti umbi dengan akar-akar yang tebal, dan sering kali mempunyai ruang-ruang yang terisi dengan minyak yang menguap. Kawasan Kebun Raya Sambas merupakan hutan sekunder diperuntukan sebagai area konservasi, koleksi tumbuhan ex situ, satwa secara in situ, memiliki hutan rawa, hutan dataran rendah dan riparian. Tujuan dari penelitian ini adalah untuk mendapatkan data jenis-jenis famili Zingiberaceae Penelitian ini menggunakan metode survey dan eksplorasi flora dengan membuat plot pengamatan di setiap tipe hutan. Hasil penelitian ini ditemukan 10 spesies dari 7 genus berbeda dengan total 33 individu, spesies yang ditemukan terdiri dari: Alpinia galanga (L.) Willd, Amomum coriaceum R.M Sm, amomum sp, Elettariopsis curtisii Bak, Etlingera nasuta (K.Schum.) R.M.Sm, Globba tri color Ridl, Globba sp, Plagiostachys sp, Zingiber multibracteatum Holtum, Zingiber sp, kemudian genus yang ditemukan terdiri dari : Alpinia, Amomum, Elettariopsis, Etlingera, Globba, Plagiostachys dan Zingiber.Kata Kunci : Identifikasi, Kebun Raya Sambas, Zingiberaceae
LAJU PENGURAIAN SERASAH DAUN (Rhizophora spp.) DI LAHAN REHABILITASI MANGROVE KELURAHAN SETAPUK BESAR KECAMATAN SINGKAWANG UTARA
Authors: Darwati Herlina , Ayyub Ayyub , Destiana Destiana
Published: December 2022

The land for mangrove forest rehabilitation in Setapuk Besar Village, North Singkawang District is quite alarming due to abrasion and seawater intrusion. Leaf litter decomposition of Rhizophora spp. produce essential nutrients that function as a source of food and support the life of mangrove plants. The purpose of this study was to calculate the rate of decomposition of leaf litter of mangrove Rhizophora spp. in the rehabilitation area of mangrove forests and obtain the amount of nutrient content (C-organic, N, P) from mangrove leaf litter released during the decomposition process. This study uses a survey method with a purposive technique with reference to the category of planting year (2007, 2010, 2013 and 2016). Rhizophora spp. leaf litter decomposition rate. The highest was found at station II with a value of 0.13 (gr/day) while the lowest decompositcccpion rate was found at stations II, III and IV with a value of 0.12 (gr/day). The highest value of carbon (C-organic) content was found at station II at 52.39%, the lowest value was at station IV at 49.20%. The highest value of nitrogen content was found at station I of 1.21%, while the lowest value was found at station IV at 0.76%. The highest value of phosphorus nutrient content was found at station III of 0.30%, while the lowest value was found at station II of 0.25%.Keywords: Decomposition Rate, Litter, Mangrove  AbstrakLahan rehabilitasi hutan mangrove yang berada di Kelurahan Setapuk Besar Kecamatan Singkawang Utara cukup memprihatinkan yang disebabkan oleh abrasi dan intrusi air laut. Penguraian serasah daun Rhizophora spp. menghasilkan unsur hara yang esensial berfungsi sebagai sumber makanan dan penyangga kehidupan tanaman mangrove. Tujuan dari penelitian ini adalah menghitung nilai laju dekomposisi serasah daun mangrove Rhizophora spp. di lahan rehabilitasi hutan mangrove dan mendapatkan jumlah kandungan unsur hara (C-organik, N, P) dari serasah daun mangrove yang dilepas selama proses terurai. Penelitian ini menggunakan metode survei dengan teknik purposive dengan mengacu pada kategori tahun tanam (2007, 2010, 2013 dan 2016). Laju penguraian serasah daun Rhizophora spp. tertinggi terdapat pada stasiun II dengan nilai sebesar 0,13 (gr/hari) sedangkan untuk laju penguraian terendah terdapat pada stasiun II, III dan IV dengan nilai sebesar 0,12 (gr/hari). Nilai kandungan Karbon (C-organik) tertinggi terdapat pada stasiun II sebesar 52,39%, nilai terendah terdapat pada stasiun   IV sebesar 49,20%. Nilai kandungan Nitrogen yang tertinggi terdapat pada stasiun I sebesar 1,21%, sedangkan nilai terendah terdapat pada stasiun IV sebesar 0,76%. Nilai kandungan unsur hara Posfor tertinggi terdapat pada stasiun III sebesar 0,30%, sedangkan nilai terendah terdapat pada stasiun II sebesar 0,25%.Kata kunci: Laju penguraian, mangrove, serasah, Setapuk Besar
KAJIAN PEMANFAATAN TUMBUHAN OBAT OLEH PENGOBAT TRADISIONAL (BATTRA) UNTUK MENGATASI TRAUMA FISIK DI DESA PAK LAHENG KECAMATAN TOHO KABUPATEN MEMPAWAH
Authors: Angela Dwinata , Wardenaar Evy , Yusro Fathul
Published: December 2022

This study examines the use of medicinal plants to treat physical trauma by the traditional healers of Pak Laheng village. This study will provide accurate written documentation about medicinal plants and their benefits in treating physical trauma in Pak Laheng Village, Toho Sub-District, Mempawah District, to protect and preserve traditional medicinal plants. We use a descriptive survey method, with traditional healers or battra (shamans) as selected respondents through snowball sampling. The data obtained were analyzed using descriptive methods and presented as graphs and tables. The results showed that as many as 45 (29 families) plants were used to treat physical trauma. Malvaceae, Poaceae, and Zingiberaceae are the most widely used families, each having four species. The most commonly used habitus is herbaceous (33%), and the most frequently used plant parts are leaves (41%). The most widely used processing method is pounded (68%), and the most commonly used way of use is sticked. Location of medicinal plants in the yard (76%) and most of the plants are cultivation plants (73%).Keywords: Pak Laheng Village, Physical Trauma. AbstrakPenelitian ini bertujuan mengkaji pemanfaatan tumbuhan obat oleh pengobat tradisional untuk mengatasi trauma fisik di desa Pak Laheng. Manfaat penelitian ini diharapkan dapat memberikan informasi yang akurat dalam bentuk dokumentasi tertulis mengenai jenis tumbuhan obat dan pemanfataannya untuk mengatasi trauma fisik di Desa Pak Laheng Kecamatan Toho Kabupaten Mempawah dalam upaya perlindungan dan pelestarian tumbuhan obat tradisional. Penelitian ini menggunakan metode survei deskriptif. Responden yang diambil adalah dukun/tabib kampung. Pengambilan sampel dilakukan dengan cara snowball sampling. Data yang diperoleh dianalisis dengan menggunakan metode dekskriptif dan disajikan dalam bentuk tally sheet. Hasil penelitian menunjukkan sebanyak 45 (29 famili) jenis tumbuhan digunakan untuk mengobati trauma fisik. Famili yang paling banyak digunakan adalah Malvaceae, Poaceae, dan Zingiberaceae yang masing-masing memiliki 4 spesies. Habitus yang paling sering digunakan adalah herba (33%), dan bagian tumbuhan yang paling sering digunakan adalah daun (41%). Cara pengolahan yang paling sering digunakan adalah ditumbuk (68%), dan cara penggunaan yang sering digunakan adalah ditempelkan (70%). Lokasi pengambilan tumbuhan obat di pekarangan rumah (76%), dan merupakan tumbuhan budidaya (73%).Kata kunci: Desa Pak Laheng, Trauma fisik.
PENILAIAN DAYA TARIK WISATA ALAM BATU POSOK DI DESA PENYELADI KECAMATAN KAPUAS KABUPATEN SANGGAU
Authors: Wiguna Satrio Fajar , Siahaan Sarma , Kartikawati Siti Masitoh
Published: December 2022

Sanggau is one of the regencies in West Kalimantan. Sanggau has a potential place to be used as a natural tourist area that is not widely known by many people, such as the Batu Posok natural tourism area located in Penyeladi Village, Kapuas District, Sanggau Regency. The purpose of this study was to obtain the value of nature tourism attractions and characteristics of Batu Posok natural tourism visitors in Penyeladi Village, Kapuas District, Sanggau Regency. The method used in this study is the descriptive method. The results of data analysis show that the tourist attraction in Penyeladi Village is 181.8, with a total value of 1,090.8 tourist attractions, the criteria for natural tourist attraction Batu Posok in Penyeladi Village are declared Good (A), which means the potential to be developed as a natural attraction.Keywords: Batu Posok, Sanggau, Nature TourismAbstrakSanggau merupakan salah satu kabupaten di Kalimantan Barat. Sanggau memiliki tempat yang potensial untuk dijadikan kawasan wisata alam yang belum banyak dikenal oleh banyak orang, seperti kawasan wisata alam Batu Posok yang terletak di Desa Penyeladi, Kecamatan Kapuas, Kabupaten Sanggau. Tujuan penelitian ini adalah untuk memperoleh nilai daya tarik wisata alam dan karakteristik pengunjung wisata alam Batu Posok di Desa Penyeladi, Kecamatan Kapuas, Kabupaten Sanggau. Metode yang digunakan dalam penelitian ini adalah metode deskriptif. Hasil analisis data menunjukkan daya tarik wisata di Desa Penyeladi adalah 181,8, dengan nilai total 1.090,8 daya tarik wisata, kriteria daya tarik wisata alam Batu Posok di Desa Penyeladi dinyatakan Baik (A), yang berarti potensial untuk dikembangkan sebagai daya tarik alam.Kata Kunci: Batu Posak, Sanggau, Wisata Alam
PERSEPSI MASYARAKAT TERHADAP KEBERADAAN HUTAN TEMBAWANG DI DESA BILAYUK KECAMATAN MEMPAWAH HULU KABUPATEN LANDAK
Authors: Yunita Adriana , Dewantara Iswan , Rifanjani Slamet , Marwanto Marwanto
Published: December 2022

The Tembawang forest is one of the cultures of the local community in utilizing land as a forest to meet their daily needs. One of the tembawang forests is still sustainable is managed by the indegenous people of Bilayuk Village, Mempawah Hulu District, Landak Regency. The aim of the study was to examine the community's perception of the existence of the Tembawang forest and to analyze the relationship between age, cosmopolitan and community income factors. The method used is a survey method with data collection carried out through direct interviews with respondents, data analysis using qualitative-quantitative descriptive analysis and inferential analysis. The results showed that people's perceptions of the existence of the Tembawang forest with respondents tended to be neutral with a frequency of 54 and a percentage of 70%. The relationship between the dependent variable and the independent variable is: cosmopolitan level with a correlation of 0.260 sig 0.023 significant, income with a correlation of 0.225 sig 0.049 significant while age level correlation 0.018 sig 0.873 not significant.Keywords: Bilayuk Village, public perception, age level, cosmopolitan, tembawang forest, income.AbstrakHutan tembawang merupakan salah satu budaya dari masyarakat lokal dalam memanfaatkan lahan sebagai hutan guna pemebuhan kebutuhan sehari-hari. Salah satu hutan tembawang yang masih lestari dikelola oleh masyarakat Desa Bilayuk Kecamatan Mempawah Hulu Kabupaten Landak. Tujuan penelitian untuk mengkaji persepsi masayarakat terhadap keberadaan hutan tembawang dan menganalisis hubungan faktor tingkat umur, kosmopolitan dan pendapatan masyaraka. Metode yang digunakan adalah metode survei dengan pengambilan data dilakukan melalui melalui wawancara langsung terhadap responden, analisis data mengunakan analisis deskritif kualitatif-kuantitatif dan analisis inferensial. Hasil penelitian menunjukan persepsi masyarakat terhadap keberadaan hutan tembawang dengan responden cenderung netral dengan frekuensi 54 dan persentase 70%. Hubungan variable terikat dan variable bebas yaitu: tingkat kosmopolitan dengan correlation 0,260 sig 0,023 signifikan, pendapatan dengan correlation 0,225 sig 0,049 signifikan sedangakan tingkat umur corelasi 0,018 sig 0,873 tidak signifikan.Kata kunci: Desa Bilayuk, persepsi masyarakat, tingkat umur, kosmopolitan, pendapatan.
KEANEKARAGAMAN JENIS KANTONG SEMAR (Nepenthes spp) DI KAWASAN HUTAN ADAT DESA SUNGAI BAKAH KECAMATAN PINOH SELATAN KABUPATEN MELAWI
Authors: Tama Riky Pratama , Herawatiningsih Ratna , Latifah Siti
Published: December 2022

Unlicensed gold mining activities (PETI) have a major impact on environmental pollution, deforestation into deserts, and pollution of river water by mercury. PETI carried out in the Hutan Adat Desa Sungai Bakah are always changing locations, this has the potential to damage the indigenous forest ecosystem. Damage to this ecosystem will have an impact on the diversity of Nepenthes species in the Hutan Adat Desa Sungai Bakah. The purpose of this study was to obtain the value of the diversity of Nepenthes species, the benefits of this research are expected to provide information to readers, especially the community in the Melawi Regency Traditional Forest about the diversity of the semar bag species in the Traditional Forest Area of Sungai Bakah Village, Pinoh Selatan District, Melawi Regency. The method used in this research is a survey method. Sampling using a double plot technique, the size of the observation plot is 2m x 2m. The placement of the observation plots was carried out by purposive sampling or deliberately placed based on the presence of semar bags with different growing places, namely valleys totaling 12 plots and hills totaling 12 plots with a total of 24 plots of observation. The results of the Nepenthes study found 38 individuals with 2 different types of Nepenthes, namely Nepenthes gracilis and Nepenthes mirabilis. The species diversity in both habitats was low, in the valley the value for the species diversity of Nepenthes was 0.30103 and in the hills the value for the diversity of Nepenthes was 0.Keywords: indigenous forest, Nepenthes, species diversity AbstrakKegiatan penambangan emas tanpa ijin (PETI) sangat berdampak pada kerusakan pencemaran lingkungan hidup, penggundulan hutan menjadi padang pasir, dan pencemaran air sungai oleh merkuri. Kegiatan PETI yang dilakukan di Hutan Adat Desa Sungai Bakah selalu berpindah lokasi, hal ini berpotensi merusak ekosistem hutan adat. Kerusakan ekosistem ini akan berdampak pada keanekaragaman jenis Nepenthes yang ada di Hutan Adat Desa Sungai Bakah.  Tujuan penelitian ini adalah untuk mendapatkan nilai keanekaragaman jenis kantong semar (Nepenthes spp). Metode yang digunakan dalam penelitian ini adalah metode survey, pengambilan sampel menggunakan teknik petak ganda ukuran petak pengamatan yaitu 2m × 2m. Peletakan petak pengamatan dilakukan secara purposive sampling diletakan berdasarkan keberadaan Nepenthes spp. dengan perbedaan tempat tumbuh yaitu lembah berjumlah 12 petak dan bukit berjumlah 12 petak dengan total petak pengamatan 24 petak. Hasil penelitian Nepenthes spp. ditemukan sebanyak 38 individu dengan 2 jenis Nepenthes spp. yang berbeda yaitu Nepenthes gracilis dan Nepenthes mirabilis. Keanekaragaman jenis di kedua habitat rendah, di lembah nilai keanekaragaman jenis Nepenthes spp. adalah 0,30103 dan di bukit dengan nilai keanekaragaman jenis Nepenthes spp. adalah 0 sehingga tergolong rendah.Kata kunci : Hutan adat, Nepenthes, Keanekaragaman jenis
Atherosclerotic-derived endothelial cell response conducted by titanium oxide nanotubes
Authors: Beltran-Partida Ernesto , Valdez-Salas Benjamin , García-López Portillo Martha , Gutierrez-Perez Claudia , Castillo-Uribe Sandra , Salvador-Carlos Jorge , Alcocer-Cañez José , Cheng Nelson
Published: December 2022

Atherosclerosis lesions are described by the formation of an occlusive wall-vessel plaque that can exacerbate infarctions, strokes, and even death. Furthermore, atherosclerosis damages the endothelium integrity, avoiding proper regeneration after stent implantation. Therefore, we investigate the beneficial effects of TiO2 nanotubes (NTs) in promoting the initial response of detrimental human atherosclerotic-derived endothelial cells (AThEC). We synthesized and characterized NTs on Ti6Al4V by anodization. We isolated AThEC and tested the adhesion and long-lasting proliferation activity promoted by the surfaces. Furthermore, the cytoskeleton arrangement and the modulation of focal adhesions were studied on the materials. Moreover, ultrastructural cell-surface contact at the nanoscale and membrane roughness were evaluated to explain the results. Our findings depicted improved filopodia and focal adhesions stimulated by the NTs. Similarly, the NTs harbored long-lasting proliferative metabolism after 5 days, explained by the overcoming cell-contact interactions at the nanoscale. Furthermore, the senescent activity detected in the AThEC could be mitigated by the modified membrane roughness and cellular stretch orchestrated by the NTs. Despite the dysfunctional status of the AThEC, our study brings new evidence for the potential application of nano-configured biomaterials for innovation in stent technologies.
Efficient Ligand Discovery Using Sulfur(VI) Fluoride Reactive Fragments
Authors: Aatkar Arron , Vuorinen Aini , Longfield Oliver , Gilbert Katharine , Peltier-Heap Rachel , Wagner Craig , Zappacosta Francesca , Rittinger Katrin , Chung Chun-wa , House David , Tomkinson Nicholas , Bush Jacob
Published: December 2022

Sulfur(VI) fluorides (SFs) have emerged as valuable electrophiles for the design of 'beyond cysteine' covalent inhibitors, and offer potential for expansion of the liganded proteome. Since SFs target a broad range of nucleophilic amino acids, they deliver an approach for the covalent modification of proteins without requirement for a proximal cysteine residue. Further to this, libraries of reactive fragments present an innovative approach for the discovery of ligands and tools for proteins of interest by leveraging a breadth of mass spectrometry analytical approaches. Herein, we report a screening approach that exploits the unique properties of SFs for this purpose. Libraries of SF-containing reactive fragments were synthesised, and a direct-to-biology workflow was taken to efficiently identify hit compounds for CAII and BCL6. The most promising hits were further characterised to establish the site(s) of covalent modification, modification kinetics, and target engagement in cells. Crystallography was used to gain a detailed molecular understanding of how these reactive fragments bind to their target. It is anticipated that this screening protocol can be used for the accelerated discovery of ‘beyond cysteine’ covalent inhibitors.
Streamlined Data Processing for Determination of Kd with "Accurate Constant via Transient Incomplete Separation" (ACTIS)
Authors: Rukundo Jean-Luc , Latimer Jessica , Jain Shiv , Kochmann Sven , Krylov Sergey N.
Published: December 2022

The determination of accurate equilibrium dissociation constants Kd of protein–small molecule complexes is important but challenging as all established methods have inherent sources of inaccuracy. ACTIS is a new method for Kd determination using transient incomplete separation of the complex from the unbound small molecule in a pressure-driven flow inside a capillary. ACTIS is accurate and its accuracy is invariant to variations in geometries of both the fluidic system and the flow. Furthermore, ACTIS is implemented using a simple fluidic system supporting its accuracy and providing a simple-to-follow/copy template for instrumentation. Despite the simple and robust instrumentation/acquisition, the current data processing workflow is cumbersome, time-consuming, and prone to hard-to-trace human errors therefore hindering ACTIS’ ability to become a practical reference method for Kd determination. This technical note describes a streamlined workflow for processing ACTIS data; the workflow is implemented as a set of open-source software tools called prACTISed (https://github.com/prACTISedProgram/prACTISed). These tools allow all steps of data processing to be performed in fast and straightforward fashion. These practical software tools complement the simple instrumentation serving both developers and users of ACTIS.
Deciphering the antioxidative role of p53 against H2O2-induced DNA damage using ion mobility mass spectrometry
Authors: Peris-Díaz Manuel David , Krężel Artur , Barran Perdita
Published: December 2022

The transcription factor p53 is exquisitely sensitive and selective to a broad variety of cellular environments. Several studies have reported that oxidative stress weakens the p53-DNA binding affinity for certain promoters depending on the oxidation mechanism. Despite this body of work, the precise mechanisms by which the physiologically relevant DNA-p53 tetramer complex senses cellular stresses caused by H2O2 are still unknown. Here, we employed native mass spectrometry (MS) and ion mobility (IM)-MS coupled to chemical labelling and chemical oxidation to examine the mechanism of redox regulation of the p53-p21 complex. Our approach has found that two reactive cysteines in p53 protect against H2O2-induced oxidative DNA damage by forming sulfenates. A harsh H2O2 insult that exceeds the antioxidant capability of p53 causes DNA oxidation followed by p53 dissociation. The DNA-free p53 is further oxidized to form disulfides leading to function and structure impairment.
Visible Light-Induced Coupling of Carboxylic Acids with Alcohols and Amines
Authors: Scheidt Karl , Peng Qiupeng , Gutierrez Osvaldo , Gogoi Achyut , Rentería-Gómez Angel
Published: December 2022

The combination of activated carboxylic acids and alcohols or amines to access esters and amides, respectively, is a cornerstone of organic chemistry and has been well developed over the past century. These dehydrations are extensively used in medicinal chemistry and natural product synthesis due to the prevalence of these functional groups in bioactive molecules. Here, we report a divergent process from the expected ester/amide outcomes through a light-induced coupling of activated carboxylic acids and alcohols/amines to efficiently prepare -hydroxy/amino ketones or -ketophosphonates via single-electron chemistry. A phosphorus linchpin strategy allows for the combination of these simple reagents through an intramolecular triplet state radical process, thereby enabling new carbon-carbon bond formation.
Rationalizing aggregate structures with orbital contributions to the exchange-repulsion energy
Authors: Henrichsmeyer Johannes , Thelen Michael , Bröckel Marc , Fadel Mariam , Behnle Stefan , Sekkal Rahal Majda , Fink Reinhold
Published: December 2022

It is shown that repulsive interactions have a crucial influence on the structure of prototypical non-covalently bonded systems. To explain this, we propose a molecular orbital based model for the exchange-repulsion contribution to the total interaction energy. As a central result, our model shows that energetically preferred aggregate structures exhibit reduced exchange repulsion, which can be deduced from the nodal structure of certain occupied orbitals. In this way, the directionality of halogen bonds and the preferred arrangements in pi-aggregates are explained using the Cl2-He, benzene-benzene, and benzene-hexafluorobenzene systems as examples, where commonly applied electrostatic models fail.
Chemical insights on the formation of colloidal iridium nanoparticles from in situ X-ray total scattering: Influence of precursors and cations on the reaction pathway
Authors: Mathiesen Jette K. , Quinson Jonathan , Blaseio Sonja , Kjær Emil T. S. , Dworzak Alexandra , Cooper Susan , Pedersen Jack K. , Wang Baiyu , Bizzotto Francesco , Schröder Johanna , Kinnibrugh Tiffany L. , Simonsen Søren B. , Theil Kuhn Luise , Kirkensgaard Jacob J. K. , Rossmeisl Jan , Oezalsan Mehtap , Arenz Matthias , Jensen Kirsten Marie Ørnsbjerg
Published: December 2022

Iridium nanoparticles are important catalysts for several chemical and energy conversion reactions. Studies of iridium nanoparticles have also been key for the development of kinetic models of nanomaterial formation. However, compared to other metals such as gold or platinum, there is very limited knowledge on the actual formation pathway of iridium nanoparticles on the atomic and molecular level. Here, we use in situ X-ray total scattering experiments with pair distribution function analysis to study a simple, surfactant-free synthesis of colloidal iridium nanoparticles. The reaction is performed in methanol at 50 °C with only a base and an iridium salt as precursor. From different precursor salts - IrCl3, IrCl4, H2IrCl6, or Na2IrCl6 – colloidal nanoparticles as small as Ir55 are obtained as the final product. The nanoparticles do not show the bulk iridium face-centered cubic (fcc) structure, but decahedral and icosahedral structures. The formation route is highly dependent on the precursor salt used. Using IrCl3 or IrCl4, metallic iridium nanoparticles form rapidly from IrxCly complexes, whereas using H2IrCl6 or Na2IrCl6, the iridium nanoparticle formation follows a sudden growth after an induction period and the brief ap-pearance of a crystalline phase. With H2IrCl6, the formation of different Irn (n= 55, 55, 85, 116) nanoparticles depends on the nature of the cation in the base - LiOH, NaOH, KOH, or CsOH, respectively - and larger particles are obtained with larger cations. As the particles grow, the nanoparticle structure changes from partly icosahedral to decahedral. The presented results introduce a new iridium nanoparticle synthesis model system and provide new chemical insights into nanoparticle formation and growth.
Gaussian Process Regression (GPR) Method for the Prediction of Rate Coefficients of Gas-phase Reactions in Chemical Ionization Mass Spectrometry
Authors: BHATIA MANJEET
Published: December 2022

Reaction kinetics of chemical ionization mass spectrometry (CI-MS) based ion-molecule reactions is an important component in the quantification of trace-level volatile organic compounds (VOCs). The rate coefficients of such CI-MS reactions are predicted using the Gaussian process regression (GPR) machine learning method from the dipole moment, polarizability, and molecular weight of the molecules, mitigating experimental complexity in CI-MS rate coefficient estimation. GPR can make predictions combining prior knowledge (kernel function) which is considered the heart of the GPR model and provide uncertainty measures over predictions. A suitable kernel combination with proper tuning of parameters can make the Gaussian process more robust and powerful. Various kernel combinations, such as kernel addition and multiplication, are tested in the GPR prediction of rates. A blend of radial basis function (RBF), white noise, and squared exponential kernel performs better, and the predicted rates are in close agreement with the experimental rates. GPR provides an alternative to the capture collision rates and can be useful when there are no experimental data available and/or the available data contain large uncertainty in the rate coefficients.
La educación virtual: logros, desafíos pendientes, búsqueda de un balance. El rol de los docentes. Nuevos perfiles
Authors: Arica Solórzano Áurea Elisa
Published: December 2022

Esta propuesta partió de la necesidad que se evidencia en la carencia del logro de aprendizajes, en el desánimo y desinterés con relación a los entornos virtuales. Así también, de la necesidad de que la práctica docente sea revisada y reformulada con el fin de concientizar a los docentes e invitarlos a seguir un modelo reflexivo. El objeto de estudio propuso un nuevo perfil docente: el docente reflexivo; un nuevo desafío para la educación virtual. Se analizó el perfil del docente tradicional vs. el del docente reflexivo, cuya propuesta se centra en adoptar la práctica reflexiva, una metodología holística cuyo principal eje es la afectividad, y que difiere de la reflexión habitual inherente al ser humano. Asociamos la práctica reflexiva del docente a los estilos de aprendizaje de los estudiantes para el logro de un conocimiento metacognitivo. En un intento de establecer un perfil del docente virtual, se puso a disposición una tabla con las características del docente reflexivo y se invitó a los docentes cuya práctica se centra en la transmisión de conocimientos a realizar un ejercicio práctico en tres niveles de reflexión. Finalmente, se propuso extrapolar esta metodología a otras áreas del saber.
Los egipcios etnógrafos del pasado: las civilizaciones y su mirada del otro
Authors: Mac Kay Fulle Martín , Olavarria Cedano Maite
Published: December 2022

El material artístico de las grandes civilizaciones no solo es la expresión de sus prácticas culturales, sino que también ofrece una visión detallada de los distintos pueblos con quienes convivían y se enfrentaban, de modo que quedara de esta manera registrada su existencia.
El Perú en el proceso de integración de América Latina de 1960 a 1990
Authors: Tello Vidal Luis Ernesto
Published: December 2022

Este estudio aborda la historia económica, institucional y de las relaciones exteriores del Perú en el marco de los procesos de integración latinoamericana. Se toma como punto de inicio la década del sesenta en que se crea la Asociación Latinoamericana de Libre Comercio (ALALC) y se firma el Acuerdo de Cartagena que dio origen a la actual Comunidad Andina. El período del estudio abarca hasta los años noventa, en que se produjeron transformaciones en ambos bloques bajo la influencia del “regionalismo abierto” y el abandono de las políticas de sustitución de importaciones en los países de la región.
Endodontic flare-ups: A review
Authors: Amudha Lakshmi Krishnan , Usha Rao Golla , Jayaraman Mahalakshmi , Ramdhas Annapoorani
Published: December 2022

Endodontic treatment can stimulate potential symptoms such as pain and swelling during or after the treatment known as the Endodontic flare-ups which is a nightmare for both Dentist and Patients. Its incidence can vary from 1.4 to 50. The multi-causal origin of these flare-ups include the microbial factors the patient factors and the treatment factors. Among these conceivably micro-organisms play a major role. The principal reason for the inter-appointment pain is the development of acute inflammation in the peri-radicular tissue region in response to any irritation extending from the root canal system. Considering these situations preventive measures and treatment strategies against these flare ndashups has been proposed. Having a proficient knowledge about the etiologic factors and the management of these flare ndashups can help in reducing the occurrence of this abominable event.
Medical Ethics
Authors: DS Ashok
Published: December 2022

None
A rare case of recurrent Vestibular Schwannoma
Authors: Waseem Khadri Syed , Chandrakala Ms
Published: December 2022

A vestibular Schwannoma is a non-cancerous primary intracranial tumor of the myelin-forming cells of the vestibulo-cochlear nerve 8th cranial nerve. It grows slowly or not at all. Rarely it may grow rapidly and become large enough to press against the brain and interfere with the vital functions. Treatment includes regular monitoring radiation and surgical removal. Here we report a rare case of recurrent vestibular Schwannoma which recurred after complete removal of tumor.
Association of non-alcoholic fatty liver disease (NAFLD) and insulin resistance in type 2diabetes
Authors: Anjum Sumaiya , A Thejashwini , C.P Nanjaraj , M.R Shashikumar , Jayaram Shubha , Nageshappa Savitha , B.M Srikanta , M.A Shekar
Published: December 2022

Background Non-alcoholic fatty liver disease NAFLD is one of the leading causes of nonalcoholic steatohepatitis NASH cirrhosis and hepatocellular carcinoma and is a major risk factor in hepatic insulin resistance IR. IR appears to be a common pathophysiological link between NAFLD and type 2 diabetes mellitus T2DM and limited information is available on the association of NAFLD with IR in T2DM individuals. We decided to determine whether there is association of NAFLD with IR in T2DM subjects.Material amp Methods Study involving 151 53 males 98 females T2DM subjects were screened for NAFLD using abdominal ultrasound scanning clinical assessment and biochemical parameters. IR was calculated using HOMA-IR. Association between NAFLD and IR was tested by Chi-square analysis. Significant difference between NAFLD and non-NAFLD subgroups was analyzed by t-test and z-test.Results The prevalence of NAFLD IR and hypertension in T2DM subjects were found to be 73 81 and 80 respectively. There was no significant difference in the prevalence of these between male amp female. However the prevalence of obesity and central obesity was significantly high in females. The comparison between NAFLD and non-NAFLD subgroups showed significantly high prevalence of IR hypertension obesity central obesity elevated SGPT and TG in NAFLD group. However there was no significant difference in mean values of serum biochemical parameters except TG VLDL and SGPT. NAFLD showed strong association with IR OR 13.ConclusionThe study indicated high prevalence of NAFLD and IR and strong association between them in diabetic population.
Cardiac MRI in various right heart pathologies: Case based discussion
Authors: Chudgar Priya , Kamat Nikhil , Burkule Nitin , Rokade M.L.
Published: December 2022

Right heart evaluation is often difficult in Echocardiography. Cardiac magnetic resonance imaging CMRI provides valuable information in various right heart pathologies. It can reliably estimate function and volume of right heart chambers. This plays crucial role in the diagnosis of various congenital heart diseases as well as arrhythmogenic cardiomyopathy. Evaluation of tricuspid leaflet morphology is better with Cardiac MRI. Myocardial characterization with delayed enhancement images also aids in the diagnosis of RV infarction. This article describes various clinical and radiologic presentations of right heart diseases.