bluuebunny/crossref_metadata_2025 huggingface dataset:
The Capital Structure as A Mediator Between Profitability and Company Size to Company Value in Textile And Garment Sector Companies Listed on The Indonesia Stock Exchange (IDX)
Authors: Ady Sri Utami , Zakina Oky Fauzul
Published: October 2023

This study aimed to determine the effect of profitability and company size on company value with capital structure as an intervening variable in textile and garment sector companies listed on the Indonesia Stock Exchange (IDX) for 2018-2022. This research used a quantitative approach and secondary data from annual financial statements from www.idx.co.id. The population in this study was textile and garment sector companies listed on the Indonesia Stock Exchange (IDX) in the 2018-2022 period, with a population of 22 companies. Determining research samples used the purposive sampling method, and 18 companies with 90 data points were obtained as samples. Data analysis was performed using SEM-PLS version 3.0. The results of this study showed that profitability had a significant positive effect on capital structure. The size of the company had no impact on the capital structure. Profitability had a significant positive effect on the value of the company. The size of the company had no impact on the value of the company. Capital structure had a significant positive effect on the value of the company. Profitability had a significant positive impact on the value of the company with capital structure as an intervening variable; the size of the company did not affect the value of the company with capital structure as an intervening variable.
ANALISIS USAHA ABON IKAN TUNA
Authors: Rustandy Diky , Noor Trisna Insan , M. Andrie Benidzar
Published: October 2023

Penelitian ini bertujuan untuk menganalisis biaya, penerimaan, pendapatan, R/C dan titik impas pada usaha Abon Ikan Tuna Industri Rumah Tangga Camar Laut. Penelitian ini menggunakan studi kasus, penentuan sampel digunakan secara sengaja (purvosive sampling). Lokasi Penelitian di Industri Rumah Tangga Camar Laut Kelurahan Kalangjaladri Kecamatan Parigi Kabupaten Pangandaran. Data yang digunakan adalah data primer dan sekunder. Teknik pengumpulan data dilakukan dengan observasi, wawancara dan pencatatan. Hasil penelitian menunjukan bahwa biaya total yang dikeluarkan oleh pengusaha abon ikan tuna Industri Rumah Tangga Camar Laut adalah Rp 244.857,11/satu kali proses produksi. Penerimaan rata-rata yang diperoleh adalah Rp 360.000,00/satu kali proses produksi. Pendapatan yang diperoleh oleh pengusaha Abon Ikan adalah Rp 115.152,89/satu kali proses produksi. Nilai R/C yang didapat adalah 1,47 dengan ini analisa usaha bisa dikatakan menguntungkan dan layak untuk dilanjutkan. Besarnya titik impas Industri Rumah Tangga abon ikan camar laut Desa Kalangjaladri satu kali proses produksi, titik impas unit sebanyak 8 bungkus dalam satu kali proses produksi dan titik impas harga adalah Rp 20.404,76/pcs dalam satu kali proses produksi.
STRATEGI PENGEMBANGAN USAHATANI TANAMAN KUBIS
Authors: Suwandy Irna Ardiyanti , Setia Budi , Kurnia Rian
Published: October 2023

Kubis (Brassica oleracea) biasa dikenal masyarakat dengan sebutan kol merupakan tanaman semusim yang berbentuk perdu. Tujuan dari penelitian ini adalah untuk mengetahui : (1) faktor kekuatan dan kelemahan yang ada didalam pengembangan usahatani tanaman kubis (Brassica oleracea). (2) faktor peluang dan acaman yang ada didalam pengembangan usahatani tanaman kubis (Brassica oleracea). (3) Menentukan formulasi strategi yang tepat dalam upaya pengembangan usahatani tanaman kubis (Brassica oleracea). Metode penelitian yang digunakan adalah studi kasus. Sampel diambil secara purposive sampling kepada 17 responden. Data dianalisis menggunakan analisis SWOT. Hasil penelitian menunjukan bahwa : (1) Faktor kekuatan yang ada yaitu lahan pengembangan tersedia, pengalaman petani, kemampuan petani dan akses transportasi mudah. Faktor kelemahannya yaitu modal terbatas, kurang informasi pasar, sarana produksi terbatas. (2) Faktor peluang yang ada yaitu kondisi alam potensial, permintaan kubis semakin meningkat. Faktor ancaman yang ada yaitu serangan hama dan penyakit pada tanaman, peran penyuluh belum maksimal, teknologi belum maksimal dan fluktuasi harga. (3) Formulasi strategi yang tepat dari hasil analisis SWOT berdasarkan hasil penelitian berada pada kuadran I strategi yang diutamakan adalah strategi agresif (S-O), yaitu dengan memanfaatkan potensi yang ada untuk terus melakukan  usaha secara kontinyu  juga dengan intensifikasi dan ekstensifikasi pertanian dalam upaya meningkatkan produktivitas  kubis.
ANALISIS USAHATANI PENANGKARAN BENIH PADI (ORYZA SATIVA L) VARIETAS INPARI 32
Authors: Subekti Marwan Panca , Kurnia Rian , Yusuf Muhamad Nurdin
Published: October 2023

Penelitian ini bertujuan untuk mengetahui : 1) Besarnya biaya, penerimaan dan pendapatan usahatani penangkaran benih padi (Oryza sativa L) Varietas Inpari 32 per hektar per musim tanam di UPTD Benih Pertanian Kecamatan Majenang Kabupaten Cilacap; dan 2) Besarnya R/C usahatani penangkaran benih padi (Oryza sativa L) Varietas Inpari 32 per hektar per musim tanam di UPTD Benih Pertanian Kecamatan Majenang Kabupaten Cilacap. Jenis penelitian yang digunakan dalam penelitian ini adalah studi kasus pada UPTD Benih Pertanian Varietas Iinpari 32 di Kecamatan Majenang Kabupaten Cilacap. Adapun teknik penarikan sempel pada penelitian ini dilakukan secara sensus (sampling jenuh), yaitu pada 32 sampel petani penangkaran benih padi (Oryza sativa L) Varietas Inpari 32 di UPTD Benih Pertanian Kecamatan Majenang Kabupaten Cilacap. Hasil penelitian menunjukan bahwa : 1) Besarnya biaya yang dikeluarkan pada usahatani penangkaran benih padi (Oryza sativa L) per hektar per musim tanam di UPTD Benih Pertanian Kecamatan Majenang Kabupaten Cilacap adalah sebesar Rp 13.809.641,75, penerimaan sebesar Rp 26.725.000, sehingga pendapatannya sebesar Rp 12.915.358,25. 2) Besarnya R/C usahatani penangkaran benih padi (Oryza sativa L) Varietas Inpari 32 per hektar per musim tanam di UPTD Benih Pertanian Kecamatan Majenang Kabupaten Cilacap sebesar 1,93.
KELAYAKAN USAHA DAN NILAI TAMBAH AGROINDUSTRI SALE PISANG (STUDI KASUS PADA AGROINDUSTRI KHARISMA DI KELURAHAN KERSANAGARA KECAMATAN CIBEUREUM KOTA TASIKMALAYA
Authors: Fitriah Annisa , Noor Trisna Insan , Aziz Saepul
Published: October 2023

Sale pisang merupakan produk pisang yang dibuat dengan proses pengeringan dan pengasapan. Sale pisang biasanya banyak dijumpai di Jawa Barat. Analisis nilai tambah diperlukan dalam satu usaha yang dikelola, karena hal tersebut dilakukan dalam upaya meningkatkan nilai tambah, dengan tujuan untuk meningkatkan pendapatan dari suatu usaha. Penelitian ini bertjuan untuk mengetahui :1) kelayakan usaha dari agroindustri sale pisang Kharisma di Kelurahan Kersanagara, Kecamatan Cibeureum Kota Tasikmalaya. 2) Nilai tambah buah pisang menjadi sale pisang pada agroindustri sale pisang Kharisma di Kelurahan Kersanagara, Kecamatan Cibeureum, Kota Tasikmalaya. Jenis penelitian yang digunakan adalah studi kasus dengan metode kuantitatif dan kualitatif. Tenik penarikan sampel dalam penelitian ini dilakukan secara purposive sampling yaitu pada agroindustri sale pisang Kharisma. Hasil penelitian ini menunjukkan bahwa bahwa : 1) biaya yang dikeluarkan oleh responden agroindustri sale pisang Kharisma dalam satu kali proses produksi yaitu Rp 1.129.713,18, penerimaan yaitu Rp 2.100.000, pendapatan yaitu Rp 970.286,82 , sehingga memperoleh 2) Nilai R/C sebesar 1,85 per satu kali proses produksi. 3) Nilai tambah yang diperoleh pada agroindustri sale pisang Kharisma yaitu Rp 3.806,67 per kilogram dalam satu kali proses produksi. Kata Kunci: R/C, Nilai Tambah, Agroindustri, Sale Pisang ABSTRACTPisang sale adalah produk pisang yang dibuat dengan proses pengeringan dan pengasapan. Penjualan pisang biasanya ditemukan di Jawa Barat. analisis nilai tambah diperlukan dalam suatu usaha yang dikelola, karena dilakukan untuk meningkatkan nilai tambah, untuk meningkatkan pendapatan suatu usaha. Penelitian ini bertujuan untuk mengetahui: 1) kelayakan usaha agroindustri penjualan pisang Kharisma di Desa Kersanagara, Kecamatan Cibeureum, Kota Tasikmalaya. 2) Nilai tambah pisang untuk berjualan pisang di agroindustri penjualan pisang di Kharisma, Desa Kersanagara, Kecamatan Cibeureum, Kota Tasikmalaya. Jenis penelitian yang digunakan adalah studi kasus dengan metode kuantitatif dan kualitatif. Teknik pengambilan sampel dalam penelitian ini dilakukan dengan purposive sampling, yaitu pada agroindustri penjualan pisang Kharisma. Hasil penelitian ini menunjukkan bahwa: 1) biaya yang dikeluarkan oleh responden agroindustri yang menjual pisang Kharisma dalam satu proses produksi adalah Sebesar Rp 1.129.713,18, pendapatan sebesar Rp 2.100.000, pendapatan sebesar Rp 970.286.82,2) nilai R/C sebesar 1,85 per satu proses produksi. 3) Nilai tambah yang diperoleh dalam penjualan agroindustri pisang Kharisma adalah Rp 3.806,67 per kilogram dalam satu proses produksi.Kata Kunci: R/C, Nilai Tambah, Agroindustri, Penjualan Pisang
FAKTOR-FAKTOR YANG MEMENGARUHI ALIH FUNGSI LAHAN KARET MENJADI UBI KAYU DI DESA NEGARARATU KECAMATAN SUNGKAI UTARA KABUPATEN LAMPUNG UTARA
Authors: Afifah Mela , Endaryanto Teguh , Affandi Muhammad Irfan
Published: October 2023

Tujuan penelitian ini adalah mengetahui karakteristik petani yang mengalih fungsi lahan karet menjadi ubi kayu dan menganalisis faktor-faktor yang memengaruhi alih fungsi lahan karet menjadi ubi kayu di Desa Negararatu Kecamatan Sungkai Utara, Kabupaten Lampung Utara. Penelitian dilakukan di Desa Negararatu, Kecamatan Sungkai Utara Kabupaten Lampung Utara. Teknik pengambilan sampel pada penelitian dilakukan dengan metode pengambilan sampel acak sederhana. Sampel terdiri dari 63 orang. Pengambilan data dilakukan pada bulan November 2021 sampai dengan Januari 2022. Analisis data yang digunakan dalam penelitian menggunakan regresi linier berganda. Berdasarkan hasil penelitian, (1) mayoritas tingkat pendidikan petani alih fungsi lahan adalah Sekolah Dasar sebesar 46,03 persen, umur petani alih fungsi berusia 45-54 tahun atau tergolong usia produktif, mayoritas petani alih fungsi memiliki tanggungan anggota keluarga sebanyak 1-2 orang sebesar 50,79 persen, luas lahan yang dimiliki petani alih fungsi berkisar 0,50-1,00 hektar dengan status kepemilikan lahan milik sendiri, dan jumlah pengalaman usahatani karet mayoritas 1-10 tahun sebanyak 27 orang dan jumlah pengalaman usahatan karet mayoritas 1-10 tahun sebanyak 27 orang, (2) faktor-faktor yang memengaruhi alih fungsi lahan karet menjadi ubi kayu di Desa Negararatu Kecamatan Sungkai Utara Kabupaten Lampung Utara adalah harga ubi kayu, penerimaan ubi kayu dan biaya usahatani karet.
ANALISIS KELAYAKAN FINANSIAL AGROINDUSTRI KERIPIK PISANG (Studi Kasus pada Agroindustri Keripik Pisang Karya Ayu di Desa Pusakanagara Kecamatan Baregbeg Kabupaten Ciamis)
Authors: Wahyudin Wahyudin , Noor Trisna Insan , Kurnia Rian
Published: October 2023

Agroindustri keripik pisang “Karya Ayu” merupakan agroindustri yang memproduksi keripik pisang dan memasarkan produk tersebut ke berbagai daerah di wilayah Ciamis dan sekitarnya. Penelitian ini dilaksanakan bertujuan untuk mengetahui tingkat kelayakan usaha pada usaha keripik pisang “Karya Ayu”. Untuk mengetahui hal tersebut maka diperlukan analisis kelayakan finansial terhadap produk agroindustri keripik pisang “Karya Ayu” dengan menggunakan beberapa analisa perhitungan kriteria investasi yaitu NPV, Net B/C, IRR dan Payback Period. Dari hasil perhitungan dengan kriteria investasi diperoleh nilai NPV lebih besar dari nol atau bernilai positif, yaitu  Rp. 553.532.413,- , Net B/C sebesar 2,89 lebih besar dari 1, IRR sebesar 64,30% lebih besar dari tingkat suku bunga yang berlaku yaitu 12%, dan Payback Period atau jangka waktu pengembalian investasi yang dibutuhkan yaitu 1 tahun 9 bulan. Maka ditinjau dari segi aspek finansial agroindustri keripik pisang “Karya Ayu” layak untuk dijalankan.
STRUKTUR DAN DISTRIBUSI PENDAPATAN PETANI JAGUNG DI DESA KARANGPARI KECAMATAN RANCAH KABUPATEN CIAMIS
Authors: Latif Totoh Abdul , Noor Trisna Insan , Nurahman Ivan Sayid
Published: October 2023

Kebutuhan jagung di Kabupaten Ciamis untuk pemenuhan produksi pakan ternak masih belum terpenuhi oleh produksi domestik, padahal Ciamis merupakan sentra produksi peternakan di Jawa Barat akan selalu membutuhkan jagung sebagai bahan baku pakan ternak. Penelitian dilakukan untuk mengetahui besarnya biaya, penerimaan, dan pendapatan usahatani jagung di Desa Karangpari Kecamatan Rancah Kabupaten Ciamis, struktur pendapatan petani jagung di Desa Karangpari Kecamatan Rancah Kabupaten Ciamis, dan distribusi pendapatan petani jagung di Desa Karangpari Kecamatan Rancah Kabupaten Ciamis. Penelitian ini menggunakan jenis penelitian deskriptif kuantitatif. Jumlah petani responden sebanyak 32 orang diambil menggunakan perhitungan rumus slovin dengan tingkat kesalahan sebesar 15  persen dari total populasi petani jagung sebanyak 115 orang. Penelitian ini mencakup data primer dan sekunder, kemudian dianalisis secara deskriptif. Ditemukan dari hasil penelitian bahwa pendapatan rata-rata petani jagung sebesar Rp. 25.563.956,- `per tahun, berasal dari penerimaan total Rp. 43.284.375,- dan total biaya  rata-rata sebesar Rp. 17.720.419. Struktur pendapatan petani jagung bersumber dari sektor pertanian yang memberikan kontribusi 60,88% . Yaitu berasal dari usahatani jagung sebesar 41,34%, usahatani padi sebesar 7,31% dan peternakan sebesar 12,22%. Dan sektor non pertanian dengan kontribusi sebesar 39,12%. Distribusi pendapatan petani jagung di Desa Karangpari Kecamatan Rancah Kabupaten Ciamis mempunyai rendahnya ketimpangan, dengan nilai Indek Gini Ratio sebesar 0,08.
STRATEGI PENGEMBANGAN AGROINDUSTRI GULA SEMUT
Authors: Maulana Krisna , Rochdiani Dini , Nurahman Ivan Sayid
Published: October 2023

Produk gula semut sebagai produk unggulan daerah Kabupaten Pangandaran memiliki potensi pasar luas sampai ke luar negeri, terlebih dengan kondisi pertumbuhan permintaan dunia terhadap produk gula semut sebesar 10%-15% setiap tahun. Penelitian ini bertujuan untuk mengetahui faktor internal dan eksternal untuk mendapatkan alternatif strategi dalam pengembangan agroindustri gula semut SSF (Sweet Sugar Family) di Desa Karangbenda Kecamatan Parigi Kabupaten Pangandaran. Jenis penelitian yang digunakan yaitu metode studi kasus. Data yang digunakan bersumber dari data primer dan sekunder. Teknik penarikan responden dilakukan secara purposive sampling. Data dianalisis dengan menggunakan analisis SWOT dan Matriks SWOT. 1.Hasil analisis dan identifikasi lingkungan secara internal, didapatkan kekuatan agroindustri ketersediaan bahan baku dan produk tahan lama. Kelemahannya adalah ketersediaan alat dalam proses produksi. 2. Hasil analisis dan identifikasi lingkungan eksternal adapun peluang pada agroindustri yaitu mempunyai pelanggan tetap dan pangsa pasar meluas. Ancamannya adalah produk yang sejenis dan kenaikan harga produksi. 3. Alternatif strategi dalam pengembangan agroindustri gula semut adalah pengembangan pasar, mengoptimalkan pemanfaatan teknologi, meningkatkan promosi, menjaga kualitas produksi.
KELAYAKAN USAHATANI MINAPADI DI DESA MEKARJAYA KECAMATAN PADAKEMBANG KABUPATEN TASIKMALAYA
Authors: Latif Egi Abdul , Noor Trisna Insan , Novianty Ane
Published: October 2023

Tujuan dari penelitian ini adalah untuk mengetahui : (1) Biaya yang dikeluarkan pada usahatani minapadi dalam satu kali proses produksi, (2) Penerimaan dan pendapatan pada usahatani minapadi dalam satu kali proses produksi, (3) RC Rasio pada usahatani minapadi di Desa Mekarjaya Kecamatan Padakembang Kabupaten Tasikmalaya dalam satu kali proses produksi. Metode penelitian yang digunakan yaitu metode survey pada Petani Minapadi di Desa Padakembang Kecamatan Padakembang Kabupaten Tasikmalaya. Jenis penelitian yang akan digunakan dalam penelitian ini adalah kuantitatif dengan jumlah petani minapadi sebanyak 55 orang. Hasil penelitian menunjukan bahwa: 1) biaya yang dikeluarkan pada usahatani minapadi di Desa Mekarjaya Kecamatan Padakembang Kabupaten Tasikmalaya per satu kali musim tanamn yaitu Rp 30.190.557,51,  2) penerimaan yang didapatkan pada usahatani mina padi di Desa Mekarjaya yaitu Rp. 78.228.571.43,- dan pendapatannya sebesar Rp.48.038.013,92,-, 3) Besarnya R/C pada usahatani minapadi yaitu 2,59 artinya untuk setiap satu rupiah biaya yang dikeluarkan pada usahatani minapadi akan diperoleh penerimaan Rp. 2,59. Sehingga diperoleh pendapatan Rp. 1,59 dengan demikian usahatani minapadi di Desa Mekarjaya Kecamatan Padakembang Kabupaten Tasikmalaya menguntungkan dan layak untuk di jalankan.
EFISIENSI PEMASARAN PISANG NANGKA (Studi Kasus Pada Kelompok Tani Hibarsaluyu Desa Selajambe Kecamatan Selajambe Kabupaten Kuningan)
Authors: Millah Rio Fauzi Saeful , Setia Budi , Andrie Benidzar M
Published: October 2023

ABSTRAKPisang Nangka merupakan komoditas buah-buahan dengan produksi tertinggi di Desa Selajambe, Tetapi masih terdapat permasalah dalam proses pemasarannya seperti lemahnya koordniasi setiap Lembaga pemasaran dan belum jelasnya saluran pemnasaran pisang nangka. Penelitian ini bertujuan untuk menganalisis saluran pemasaran, marjin, biaya, keuntungan pemasaran, farmer’s share dan efisiensi pemasaran pisang Nangka di Kelompok Tani Hibarsaluyu Desa Selajambe Kecamatan Selajambe Kabupaten Kuningan. Penelitian ini menggunakan metode studi kasus, pengambilan sampel petani dilakukan dengan cara sampling jenuh, sedangkan pengambilan sampel pedagang dilakukan dengan cara snowball sampling. Sampel pada penelitian ini yaitu seluruh petani pisang nangka pada Kelompok Tani Hibarsaluyu di Desa Selajambe sebanyak 19 orang, pedagang pengumpul 3 orang, pedagang besar 2 orang dan pedagang pengecer 8 orang. Hasil penelitian menunjukkan bahwa terdapat 4 saluran pemasaran pisang nangka. Efisiensi pemasaran pada saluran 3 merupakan yang paling efisien secara teknis dengan nilai Indeks Efisiensi Teknis (IET) sebesar 0,01, sedangkan saluran pemasaran 1 merupakan yang paling efisien secara ekonomis dengan nilai Indeks Efisiensi Ekonomis (IEE) sebesar 11,00. Kata Kunci: saluran pemasaran, efisiensi pemasaran dan pisang nangka. ABSTRACT“Bananas Nangka” is a fruit commodity with the highest production in Selajambe Village, but there are still problems in the marketing process such as the weak coordniation of each marketing institution and unclear distribution of “Bananas Nangka” marketing channels. This study aims to analyze marketing channels, margins, costs, marketing profits, farmer's share and marketing efficiency of “Bananas Nangka” in the Hibarsaluyu Farmer Group, Selajambe Village, Selajambe District, Kuningan Regency. This study used a case study method, farmer sampling was carried out by saturated sampling, while trader sampling was carried out by snowball sampling. The samples in this study were all “Bananas Nangka” farmers in the Hibarsaluyu Farmer Group in Selajambe Village as many as 19 people, 3 collecting traders, 2 wholesalers and 8 retailers. The results showed that there are 4 marketing channels for in the Hibarsaluyu Farmer Group, Selajambe Village, Selajambe District, Kuningan Regency. The marketing efficiency on channel 3 is the most technically efficient with a Technical Efficiency Index (TEI) value of 0.01, while marketing channel 1 is the most economically efficient with an Economic Efficiency Index (EEI) value of 11.00.  Keywords: marketing channel, marketing efficiency and “Banana Nangka”.
Hyperosmolar hyperglycemic state presenting as transient global aphasia
Authors: Kasarabada Harish , Singh Deependra
Published: October 2023

Hyperosmolar hyperglycemic state (HHS) is an emergency condition characterized by severe dehydration secondary to uncontrolled hyperglycemic state in the absence of ketoacidosis. HHS can present with a variety of neurological symptoms including encephalopathy and seizures. In this report, we present a case of acute-onset transient global aphasia in a 65-year-old male with chronic poor glycemic control. Post-evaluation, we establish the etiology of transient global aphasia as HHS in which patient had complete recovery of symptoms following normalization of blood glucose levels.
PENETAPAN KADAR FLAVONOID, FENOLIK DAN AKTIVITAS ANTIOKSIDAN EKSTRAK BUAH Tabernaemontana Macrocarpa JACK ASAL KALIMANTAN BARAT (DETERMINATION OF FLAVONOID, PHENOLIC, AND ANTIOXIDANT ACTIVITY OF Tabernaemontana Macrocarpa JACK FRUIT EXTRACT FROM WEST KALIMANTAN)
Authors: Alimuddin Andi Hairil , Rudiyansyah Rudiyansyah , Masriani Masriani
Published: October 2023

Tabernaemontana macrocarpa Jack is one of the plants from the Tabernaemontana genus in the Apocynaceae family. Some compounds from the genus Tabernaemontana have shown interesting biological activities. Unfortunately, information about secondary metabolites and the bioactivity of T. macrocarpa Jack is limited. This study was conducted to determine the total phenolics and flavonoids contents of seeds flesh and fruit of T. montana together with their antioxidant activity. The seeds flesh and fruit of T. macrocarpa were extracted by maceration using methanol. Phytochemical tests showed that methanol extracts of seeds flesh and fruit contain alkaloids, flavonoids, and polyphenols. Total phenols and flavonoids were determined quantitatively by spectrometry and it showed that the seeds flesh contained more polyphenolics and flavonoids than the fruit. The results of the antioxidant activity showed that the seeds flesh and fruit extracts did not have antioxidant activity since their IC50 values were > 500 mg/L.
Struktur Komunitas Bivalvia di Kawasan Mangrove Desa Sungai Nibung Kecamatan Teluk Pakedai Kalimantan Barat
Authors: Sundari Nova , Nurrahman Yusuf Arief , Nurdiansyah Syarif Irwan
Published: October 2023

Desa Sungai Nibung terletak di Kecamatan Teluk Pakedai, Kalimantan Barat dengan luas hutan mangrove 3.058 Ha. Ekosistem mangrove mempunyai fungsi ekologis sebagai habitat hidup biota, termasuk bivalvia. Kelimpahan kerang dalam suatu ekosistem sangat penting dalam mempengaruhi struktur rantai makanan dan sangat ditentukan oleh faktor lingkungan yang sesuai dengan sifat biologisnya. Penelitian ini bertujuan untuk mengetahui struktur komunitas bivalvia dan parameter lingkungan di kawasan mangrove Desa Sungai Nibung. Penelitian ini dilaksanakan pada bulan Februari-April 2023 dengan menggunakan metode sistematik random sampling di tiga stasiun. Pengambilan sampel bivalvia dilakukan dengan menggunakan kuadran transek berukuran 5 x 5 m2 dan sub plot berukuran 1 x 1 m2 dengan 5 titik di dalamnya secara acak. Hasil penelitian menunjukkan terdapat 2 spesies bivalvia yaitu Geloina expansa dan Pharella acutidens. Indeks keanekaragaman (H') berkisar antara 0-0,47, indeks keseragaman (E) antara 0,18 sampai tidak terdefinisi, dan indeks dominasi (C') berkisar 0,89-1. Parameter lingkungan seperti suhu air, salinitas, pH air, pH tanah, dan DO termasuk dalam kategori optimal bagi kehidupan bivalvia. Sedangkan, substrat masih belum optimal dalam mendukung kehidupan jenis kerang lainnya selain G. expansa.
Struktur Komunitas Mangrove di Kecamatan Pulau Maya, Kabupaten Kayong Utara
Authors: Raynaldo Adityo , Saputra Robin , Erli Erli , Marista Etha , Zibar Zan , Shofiyah Sofi Siti , Rafdinal Rafdinal , Linda Riza
Published: October 2023

Ekosistem mangrove memiliki peran penting di kawasan pesisir, terutama dalam mitigasi bencana dan habitat jenis-jenis ikan dan udang. Kecamatan Pulau Maya, Kabupaten Kayong Utara dikelilingi kawasan mangrove, saat ini belum memiliki data yang komprehensif dan terbaru terkait dengan potensi struktur komunitas mangrove. Penelitian ini bertujuan untuk mengkaji komposisi jenis dan struktur komunitas mangrove di Kecamatan Pulau Maya. Pengambilan data dilakukan pada Juni - Agustus 2022, di 7 stasiun yang dipilih secara purposive dengan mempertimbangkan sebaran mangrove dan zonasi kawasan konservasi perairan yang telah ditetapkan. Data struktur komunitas diambil dengan plot pengamatan 10 x 10 m, tiap tegakan dengan DBH > 4 cm didata jenis, ukuran diameter dan tinggi, serta data-data lain seperti jumlah semaian, tutupan kanopi juga dicatat berdasarkan pedoman standar. Hasil menunjukkan 8 spesies mangrove ditemukan, yaitu Acanthus ilicifolius, Acrostichum aureum, Avicennia marina, Bruguiera parviflora, Nypa fruticans, Rhizophora apiculata, Sonneratia alba dan Xylocarpus granatum. Kerapatan individu berkisar 800 – 1700 ind ha-1 dan nilai basal area berkisar 6,13 – 112,95 m2 ha-1.Indeks nilai penting (INP) tertinggi ditemukan pada spesies R. apiculata (94,79%). Potensi mangrove di lokasi cukup tinggi dibandingkan dengan beberapa daerah lain, sehingga monitoring dan pemanfaatan yang lestari dari hasil hutan non-kayu, wisata edukasi, riset dan program padat karya berbasis masyarakat diharapkan dapat diutamakan untuk kelestarian kawasan mangrove di lokasi.
Structure and dynamics of liquid water from ab initio simulations: Adding Minnesota density functionals to Jacob’s ladder
Authors: Villard Justin , Rothlisberger Ursula
Published: October 2023

The accurate representation of the structural and dynamical properties of water is essential for simulating the unique behavior of this ubiquitous solvent. Here we assess the current status of describing liquid water using ab initio molecular dynamics, with a special focus on the performance of all the later generation Minnesota functionals. Findings are contextualized within the current knowledge on DFT for describing bulk water under ambient conditions and compared to experimental data. We find that, contrary to the prevalent idea that local and semilocal functionals overstructure water and underestimate dynamical properties, M06-L, revM06-L, and M11-L understructure water, while MN12-L and MN15-L overdistance water molecules due to weak cohesive effects. This can be attributed to a weakening of the hydrogen bond network, which leads to dynamical fingerprints that are over fast. While most of the hybrid Minnesota functionals (M06, M08-HX, M08-SO, M11, MN12- SX, and MN15) also yield understructured water, their dynamical properties generally improve over their semilocal counterparts. It emerges that exact exchange is a crucial component for accurately describing hydrogen bonds, which ultimately leads to corrections in both the dynamical and structural properties. However, an excessive amount of exact exchange strengthens hydrogen bonds and causes overstructuring and slow dynamics (M06-HF). As a compromise, M06-2X is the best performing Minnesota functional for water, and its D3 corrected variant shows very good structural agreement. From previous studies considering nuclear quantum effects (NQEs), the hybrid revPBE0-D3, and the rung-5 RPA (RPA@PBE) have been identified as the only two approximations that closely agree with experiments. Our results suggest that the M06-2X(-D3) functionals have the potential to further improve the reproduction of experimental properties when incorporating NQEs through path integral approaches. This work provides further proof that accurate modeling of water interactions requires the inclusion of both exact exchange and balanced (non-local) correlation, highlighting the need for higher rungs on Jacob’s ladder to achieve predictive simulations of complex biological systems in aqueous environments.
Finding for New Drugs in Nature for Neglected Tropical Diseases: In Silico Study of Homolycorine Alkaloids against Chagas Disease
Authors: Mora Daniel , Schosinsky Frederick , Castellón Josue , González Kevin , Bastida Jaume , Pinheiro Silvana , Zamora Ramírez William J.
Published: October 2023

Chagas disease or American trypanosomiasis is a neglected tropical disease (NTD). It is mainly caused by infection with the Trypanosoma cruzi parasite. In this study, part of an Ibero-American project of a CYTED network devoted to the use of Amaryllidaceae alkaloids as templates for the synthesis of new pharmaceuticals, we have performed a virtual screening of homolycorine-type alkaloids where two alkaloids, 10-Norneronine and 2,10b-dihydroxy-9-O-demethylhomolycorine, can be the basis for the design of new drugs due to their interaction with both Trypanothione reductase (TR), and Cruzain (CZ) showing scores close to -7 kcal/mol in molecular docking studies.
Nonadiabatic dynamics with classical trajectories: The problem of an initial coherent superposition of electronic states.
Authors: Villaseco Arribas Evaristo , Maitra Neepa , Agostini Federica
Published: October 2023

Advances in coherent light sources and development of pump-probe techniques in recent decades have opened the way to study electronic motion in its natural time-scale. When an ultrashort laser pulse interacts with a molecular target a coherent superposition of electronic states is created and the triggered electron dynamics is coupled to the nuclear motion. A natural and computationally efficient choice to simulate this correlated dynamics are trajectory-based methods where the quantum-mechanical electronic evolution is coupled to a classical-like nuclear dynamics. These methods must approximate the initial correlated electron-nuclear state by associating an initial electronic wavefunction to each classical trajectory in the ensemble. Different possibilities exist that reproduce the initial populations of the exact molecular wavefunction when represented in a basis. We show that different choices yield different dynamics, and explore the effect of this choice in Ehrenfest, surface-hopping, and exact-factorization-based coupled-trajectory schemes in a model system.
Relative Cooperativity in Neutral and Charged Molecular Clusters Using QM/MM Calculations
Authors: Nochebuena Jorge , Liu Shubin , Cisneros G. Andrés
Published: October 2023

QM/MM methods have been used to study electronic structure properties and chemical reactivity in complex molecular systems where direct electronic structure calculations are not feasible. In our previous work, we showed that non-polarizable force fields, by design, describe intermolecular interactions through pairwise interactions, overlooking many-body interactions involving three or more particles. In contrast, polarizable force fields account partially for many-body effects through polarization, but still handle van der Waals and permanent electrostatic interactions pairwise. We showed that despite those limitations, polarizable and non-polarizable force fields, can reproduce relative cooperativity achieved using Density Functional Theory, due to error compensation mechanisms. In this contribution, we assess the performance of QM/MM methods in reproducing these phenomena. Our study highlights the significance of QM region size and force field choice in QM/MM simulations, emphasizing the importance of parameter validation to obtain accurate interaction energy predictions.
Programmable computational RNA droplets assembled via kissing-loop interaction
Authors: Udono Hirotake , Fan Minzhi , Saito Yoko , Ohno Hirohisa , Nomura Shin-ichiro , Shimizu Yoshihiro , Saito Hirohide , Takinoue Masahiro
Published: October 2023

Programmable droplets, artificial liquid-like condensates of nucleic acids, are intelligent out-of-equilibrium systems that allow the critical aspects of their biological counterparts to be harnessed programmably, such as molecular sensing and phase-state change. While DNA has been central to the previous efforts, less attention has been paid to RNA. Besides DNA-like programmability, RNA plays a diverse range of protein-like roles (catalytic and regulatory ones), facilitated by its structural flexibility. Such multifaceted RNA has rich potential as a design material for creating novel programmable droplets. Here, we design and demonstrate programmable RNA droplets capable of two-input AND logic operations using a 6-way-branched RNA motif as a building block. It comprises six single-stranded RNAs. Four of them are involved in kissing-loop interaction that enables the self-assembly of network-like structures. To optimize the KL design, we numerically and experimentally show the programmability of KL interaction strength using various engineered sequences. The other two strands possess a toehold that mediates strand displacement reactions upon inputs of two target molecules, leading to a motif break-up. The designed sensing motif thus functions toward two opposite directions, composition or decomposition of the self-assembled structure, in an input-dependent manner. Experimentally, our RNA droplets show a drastic phase-state change from liquid to dispersed states upon inputs of the two miRNAs and no phase change otherwise. This observation strongly suggests that our multi-stranded sensing motif provides a flexible means to programming phase behavior. Unlike submicroscopic RNA-based logic operators, the macroscopic phase change functions as a readily detectable readout.
Laryngeal Cancer Diagnosis via miRNA-based Decision Tree Model
Authors: Arora Aarav , Tsigelny Igor , Kouznetsova Valentina
Published: October 2023

Purpose Laryngeal cancer (LC) is the most common head and neck cancer, which often goes undiagnosed due to the expensiveness and inaccessible nature of current diagnosis methods. Many recent studies have shown that microRNAs (miRNAs) are crucial biomarkers for a variety of cancers. Methods In this study, we create a decision tree model for the diagnosis of laryngeal cancer using a calculated miRNAs’ attributes, such as sequence-based characteristics, predicted miRNA target genes, and gene pathways. This series of attributes is extracted from both differentially expressed blood-based miRNAs in laryngeal cancer and random, non-associated with cancer miRNAs. Results Several machine-learning (ML) algorithms were tested in the ML model, and the Hoeffding Tree (HT) classifier yields the highest accuracy (86.8%) in miRNAs-based recognition of laryngeal cancer. Furthermore, HT-based model is validated with the independent laryngeal cancer datasets and can accurately diagnose laryngeal cancer with 86% accuracy. We also explored the biological relationships of the attributes used in HT-based model to understand their relationship with cancer proliferation or suppression pathways. Conclusion Our study demonstrates that the proposed model and an inexpensive miRNA testing strategy have the potential to serve as a cost-effective and accessible method for diagnosing laryngeal cancer.
Protein quality and physical characteristic of wood grasshopper (Melanoplus
cinereus) hydrolysate flour
Authors: Anjani G. , Pratiwi R.N. , Fathimatuzzahrah N.F. , Kusuma R.A. , Nuryanto  , Afifah D.N.
Published: October 2023

Indonesia is a tropical country with high biodiversity including insects. Insects are
referred to as a good source of protein to overcome various nutritional problems. Wood
grasshoppers (Melanoplus cinereus) have been consumed for a long time as a source of
protein with limited digestibility due to its high chitin content. In this research, wood
grasshoppers flour was added with bromelain enzyme with various concentrations 0%,
4%, 5%, 6% (w/v) to produce hydrolyzed flour in order to improve its protein quality. The
manufacture of wood grasshoppers hydrolyzate flour was carried out by first dissolving
the flour with water, then adjusting it at pH 7. Then, various concentrations of the
bromelain enzyme and inucbated 7 hrs at 55°C. The final product obtained was the
hydrolyzed flour in freeze-dried form. These flour were analyzed for their proximate
analysis, protein quality (soluble protein, protein digestibility, amino acids total),
antioxidant activity and physical properties (pH, color quantification). All these results
were compared to obtain the best flour quality. The protein digestibility and color quality
improved by the increasing bromelain concentration. However, soluble protein, amino
acid total, and pH of wood grasshopper’s hydrolysate flour decreased. Variation of
bromelain concentration gave a significant difference on water content, carbohydrates,
fats, protein, protein soluble, protein digestibility, antioxidant activity, redness and
yellowness. Nonetheless ash content, pH and lightness of these flour were comparable. In
conclusion, the best protein digestibility of wood grasshopper’s hydrolysate flour was 6%
of bromelain concentration, which was 51.33%.
Total peptide content and amino acid profile of fermented shrimp (Litopenaeus
vannamei) sausage
Authors: Nareswari N.W. , Afifah D.N. , Fulyani F. , Widyastuti N.
Published: October 2023

Hypertension can be prevented by bioactive containing food such as shrimp. Food value
can be increased through fermentation. During the process of fermentation, microbes and
enzymes will break down proteins into peptides and amino acids, making the foods easier
to digest in the body. This study aimed to determine the fermentation effect on shrimp
sausage's peptide and amino acid content. An experimental study with a completely
randomized design, involving the treatment of 4 levels of fermentation duration as control,
was carried out three times. Fermentation was conducted spontaneously with a salt
concentration of 1.2%, smoking at 50oC for 3 hrs, and a fermentation temperature of 35oC.
The parameters measured were peptide content and amino acid profile using the Ophtaldehyde (OPA) and HPLC methods. The peptide content data statistical analysis used
the One Way ANOVA and continued with the post hoc test. Amino acid profile data are
further presented descriptively. There is an influence between the fermentation duration
and the peptide content in the product (p≤0.05), and 15 types of amino acids were
obtained in fermented shrimp sausage. According to this study, the third day of
fermentation is the most efficient time for generating peptides and amino acids in shrimp
sausage, with glutamate being the highest amount of amino acid produced throughout
fermentation. Fermentation process and duration had effect on shrimp sausage's peptide
and amino acid content.
Optimization of tilapia (Oreochromis niloticus) viscera oil extraction using
response surface methodology
Authors: Purnamayati L. , Dito B.S. , Dewi E.N. , Suharto S.
Published: October 2023

Tilapia is one of the export commodities with superior fish fillet products. Fillet
processing produces much waste, one of which is viscera, which has the potential as
raw material for fish oil. Several factors, including the method, temperature, and
extraction time, influenced the quality of fish oil. This study aimed to determine the
effect of wet rendering, extraction time and temperature on tilapia viscera oil and
determine the best temperature and time based on the characteristics of fish oil using
response surface methodology (RSM). The data analysis comprised the peroxide value,
free fatty acid, anisidine value, total oxidation, and yield value. The result was then
optimized using the response surface method with Design Expert 11. The recommended
model is linear. The results for extraction at 60℃ for 25.95 mins had a yield, peroxide,
free fatty acid, p-anisidine, and total oxidation value of 21.6%, 6.69 meq/kg, 4.16%,
3.87 meq/kg, 17.79, respectively, with, a desirability value of 0.62.
The effect of catfish oil (Pangasius sp.) addition on physical and chemical
characteristics of rice bran oil mayonnaise
Authors: Siswanti  , Herawati N.C.A. , Anandito R.B.K. , Purnamayati L. , Maghfira L.L.
Published: October 2023

Rice bran oil (RBO) and catfish oil (CFO) have high unsaturated fatty acids that are good
for health. Mayonnaise products are made mostly from oil. Adding catfish oil and rice
bran oil to the mayonnaise will add nutritional value to the product. This study aimed to
determine the effect ratio of CFO:RBO on the physical, chemical, and sensory
characteristics of mayonnaise. This research used a completely randomized design with
one factor, that is ratio of RBO:CFO (74:0, 66.6:7.4, 59.2:14.8, 51.8:22.2 and 44.4:29.6)
(% w/w). Data were analyzed by one-way analysis of variance method and continued by
Duncan's multiple range tests (α=0.05). The research showed that the ratio of RBO:CFO
significantly affected chemical and sensory characteristics but not physical characteristics.
Mayonnaise in the % ratio of RBO:CFO = 59.2%:14.8% was the best formula. The
selected mayonnaise has foaming capacity, foaming stability, total phenol, moisture, ash,
protein, fat, and calorie content of 6.127%, 98.844%, 0.863%, 16.089%, 0.441%, 0.718%,
90% and 718.92 kcal/100 g, respectively. Panelists indicate their level of preference for
the color, aroma, texture, and overall mayonnaise at a preference value between 3.067-
3.867.
Form, fragment, refiguring return: Memory and abstraction in three Palestinian poems
Authors:   , Quirke Brigid
Published: October 2023

Memory-as-reclamation has been a cornerstone in Palestinian cultural production since the Nakba began in 1948. But 75 years on, generational and temporal remove complicates the relationship between memory, place and resistance. In the words of Penny Johnson, memory- as-reclamation is now “a vexed project” for writers in the diaspora. This thesis reads three poems by writers of Palestinian descent and considers how they each think about questions of memory and abstraction. The scope of these ideas is kept open. This reading examines content, craft and the way each poem interacts with other writing, both within and outside of each poet’s oeuvre. Taking Noor Hindi’s “Fuck Your Lecture on Craft, My People Are Dying”, George Abraham’s “Alternate Mythologies of Rage & Exile, in Fragments”, and Zaina Alsous’ “The Workers Love Palestine” as its key texts, this thesis draws attention to each poem’s concern with form. For these poets and poems, Palestine operates as a site of political-aesthetic tension. This thesis interrogates how each poem considers and rejects identity as a reductive tool for categorisation, and magnifies each writer’s thinking about the contribution and limitations of aesthetics and poetics to a project of Palestinian liberation.
The Application of Trenchless Piping in Sandbar Drainage Network Renovation Projects
Authors: Xia Zhicong
Published: October 2023

In this study, the research progress of trenchless piping technology for pipes with a large diameter was reviewed. The geological conditions of the sandbar in Xiangyang were taken into account in this study. This paper highlights the construction process management of the pipeline network project in Yuliangzhou Starting Area of Xiangyang City. Research was carried out in the aspects of optimizing mud ratio, controlling pipeline elevations, pipeline welding, and trenchless pipeline construction in limited spaces, stable support during pit excavation, and controlling the spacing between the junctions of two pipe segments. The research resulted in excellent outcomes and ensured safe construction, and the quality requirements were also met.
Intelligent Transportation Planning and Construction in the Era of Big Data
Authors: Chen Can
Published: October 2023

Intelligent transportation planning has become increasingly important in the era of big data. By utilizing big data technology, traffic flow can be measured and managed more effectively. This leads to transportation planning that is more scientific and provides people with more convenient travel options. In this paper, the role of big data technology in intelligent transportation planning is analyzed. Subsequently. a path towards intelligent transportation planning is proposed,laying the foundation for intelligent transportation development.
Influence of Religiosity Toward Materialism on Housewife
Authors: Sabiila Vika Riftiani , Sholichah Ima Fitri , Amelasasih Prianggi
Published: October 2023

The purpose of this study was to prove the influence of religiosity on materialism in housewives. The population of this study was 183 housewives from 4 areas with different characteristics in Gresik Regency, namely urban, rural, industrial and santri areas. The sample determination was carried out using propotionate stratified random sampling technique, with a total sample of 126 people.   The materialism scale adopted from Richins and Dawson (1992) and the religiosity scale adopted from Glock and Stark (1968), have been tested by Lutfia & Hidayat (2020). Each of these scales obtained a Cronbach Alpha value greater than 0.70, so that this research instrument can be said to be reliable. Data collection was carried out using a questionnaire with a Likert instrument, and processed with simple linear regression analysis. The test results show that the level of religiosity of housewives has a significant negative effect on the level of materialism, with a coefficient of determination of 11.3%.  This means that high religiosity will reduce materialism. The majority of respondents rated their level of religiosity as moderate and their level of materialism as low.
ABSTRAK
Tujuan penelitian ini adalah untuk membuktikan adanya pengaruh religiusitas terhadap materialisme pada ibu rumah tangga. Populasi penelitian ini sebanyak 183 orang ibu rumah tangga dari 4 wilayah dengan karakteristik berbeda di Kabupaten Gresik, yakni wilayah perkotaan, pedesaan, industri dan santri. Penentuan sampel dilakukan menggunakan teknik propotionate stratified random sampling, dengan jumlah sampel sebanyak 126 orang. Skala materialisme yang diadopsi dari Richins dan Dawson (1992) dan skala religiusitas diadopsi dari Glock dan Stark (1968), telah diuji coba oleh Lutfia & Hidayat (2020). Masing-masing skala tersebut didapatkan nilai Cronbach Alpha lebih besar dari 0,70 maka instrumen penelitian ini dapat dikatakan handal (reliabel). Pengumpulan data dilakukan dengan menggunakan kuesioner dengan instrumen likert, dan diolah dengan analisis regresi linier sederhana. Hasil pengujian menunjukkan bahwa tingkat religiusitas ibu rumah tangga memiliki pengaruh negatif signifikan terhadap tingkat materialisme, dengan koefisien determinasi sebesar 11,3%.  Hal ini berarti religiusitas yang tinggi akan dapat menurunkan materialisme. Mayoritas responden menilai tingkat religiusitas mereka sedang dan tingkat materialisme rendah.