bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of Perceived Supervisor Support, Work Life Balance and Work Engagement in Controlling Turnover Intention in a Pharmaceutical Manufacturing Company
Authors: Nie Tjhia Lian , Harjono Saebani , Purba Sylvia Diana , Sulistyaningsih Endang
Published: May 2024

This research aims to determine the effect of perceived supervisor support on turnover intention which is mediated by work life balance and work engagement. This research was conducted at a pharmaceutical manufacturing company in Cikarang, West Java using a non-probability sampling technique, namely purposive sampling. The author distributed an online questionnaire to every worker with permanent employee status with a minimum work period of 1 (one) year to 107 workers. The data analysis method uses the PROCESS Hayes macro bootstrapping method in SPSS. The research results show that perceived supervisor support does not have a significant effect on turnover intention, but work life balance and work engagement fully mediate the influence of perceived supervisor support on turnover intention
PENGARUH KAPUR DOLOMIT DAN PUPUK UREA TERHADAP PERTUMBUHAN DAN HASIL BAWANG DAUN PADA TANAH GAMBUT
Authors: Aditya Tri Marta , Radian Radian , Abdurrahman Tatang
Published: May 2024

Bawang daun Allium fistulosum merupakan salah satu jenis sayuran yang dapat dikonsumsi daunnya sebagai bumbu masak, bawang daun memiliki aroma yang sangat spesifik sehingga keberadaan bawang daun dalam suatu masakan akan menambah aroma harum dan rasa yang lezat pada makanan. Tujuan dari penelitian adalah untuk mengetahui interakasi kapur dolomit dan pupuk N dalam meningkatkan pertumbuhan dan hasil bawang daun pada tanah gambut. Penelitian dilaksanakan pada lahan yang terletak di jalan Reformasi Gg. Struktur, Pontianak Tenggara berlangsung dari bulan Februari 2023 sampai  April 2023. Penelitian ini merupakan eksperimen lapangan dengan Rancangan Acak Kelompok (RAK) faktorial yang teridiri dari 2 faktor. Faktor pertama kapur dolomit (D) yang terdiri dari 3 taraf yaitu d1=12,5 ton/ha;  d2=25 ton/ha; d3=37,5 ton/ha. Faktor kedua yaitu pupuk urea yang terdiri dari 3 taraf  yaitu n1=200 kg/ha; n2= 250 kg/ha pupuk urea; n3=300 kg/ha yang di ulang sebanyak 3 kali.Variabel yang diamati yaitu tinggi tanaman, jumlah daun perrumpun, jumlah anakkan perrumpun, volume akar, berat segar daun, dan berat kering daun. Hasil penelitian menunjukkan tidak terjadi interaksi antara kapur dolomit dan pupuk urea dalam meningkatkan pertumbuhan dan hasil bawang daun pada tanah gambut. Pemberian kapur dolomit dengan dosis 25 ton/ha  memberikan hasil terbaik terhadap berat segar bawang daun.
STRUKTUR POPULASI IKAN DURI (ARIUS MACULATUS) HASIL TANGKAPAN NELAYAN YANG DIDARATKAN DI TPI JUNGKAT KABUPATEN MEMPAWAH
Authors: Katherive Katherive , Hadinata Fitra Wira , Soetignya Widadi Padmarsari
Published: May 2024

Ikan duri merupakan salah satu komoditas hasil tangkapan utama di TPI Jungkat, Kabupaten Mempawah. Ikan duri adalah salah satu ikan yang memiliki nilai ekonomis penting dan permintaan pasar terhadap ikan duri tergolong tinggi sehingga upaya penangkapan terhadap ikan duri terus meningkat. Adanya kegiatan penangkapan ikan duri atau ikan manyung yang dilakukan terus menerus tanpa adanya suatu usaha pengaturan, maka dapat mempengaruhi keberadaan dan mengubah status stok sumberdaya ikan duri  tersebut. Penelitian ini bertujuan untuk mengetahui struktur populasi ikan duri (Arius maculatus) yang meliputi sebaran frekuensi panjang, hubungan panjang dan berat, laju pertumbuhan, mortalitas dan laju eksploitasi. Penelitian ini dilakukan pada bulan April-Mei yang berlokasi di TPI Jungkat, Kabupaten Mempawah. Jumlah sampel yang digunakan yaitu 126 ekor ikan dengan kisaran panjang 13-20 cm. Hasil penelitian menunjukan bahwa ikan duri (Arius maculatus) yang tertangkap terdiri dari 4 macam kelas ukuran dan tergolong dalam kelompok umur ikan remaja. Hubungan panjang dan berat ikan duri bersifat allometrik negatif dengan nilai panjang asimptot (L∞) sebesar 34,40 cm dan koefisien laju pertumbuhan sebesar 0,28 cm. Nilai laju mortalitas total (Z)  3,61 pertahun, mortalitas alami (M) 0,74 per tahun dan mortalitas penangkapan (F) 2,87 per tahun, serta nilai laju eksploitasi (E) 0,79 per tahun.
RESPON PERTUMBUHAN DAN HASIL BAWANG MERAH TERHADAP PEMUPUKAN KALIUM DAN KALSIUM PADA TANAH GAMBUT
Authors: Sari Rinda , Warganda Warganda , Listiawati Agustina
Published: May 2024

Respon Pertumbuhan dan hasil bawang merah terhadap pemupukan kalium dan kalsium pada tanah gambut. Bawang merah (Allium ascalonicum L.) merupakan salah satu komoditas hortikultura yang tidak terlepas dari kehidupan sehari-hari sebagai bumbu utama. Usaha untuk meningkatkan produksi agar lebih tinggi baik dari segi kualitas maupun kuantitas dapat dilakukan dengan usaha ektensifikasi. Pemanfaatan tanah gambut sebagai media dalam budidaya dihadapkan pada kendala yaitu sifat kimia tanah yang kurang baik. Upaya yang dapat dilakukan untuk memperbaiki kondisi tanah gambut agar sesuai untuk pertumbuhan dan perkembangan bawang merah adalah dengan memberikan pupuk kalium dan kalsium ke dalam tanah. Tujuan dari penelitian ini adalah untuk mengetahui interaksi antara pemberian pupuk kalium dan kalsium serta untuk mendapatkan kombinasi dosis terbaik untuk keseimbangan hara terhadap pertumbuhan dan hasil bawang merah pada tanah gambut. Penelitian dilaksanakan di lahan percobaan Fakultas Pertanian Universitas Tanjungpura, Pontianak. Waktu penelitian dimulai dari tanggal 30 September sampai dengan 30 November 2021. Penelitian ini menggunakan metode eksperimen dengan Rancangan Acak Lengkap (RAL) dengan 2 faktor yaitu faktor pupuk kalium yaitu a1 = 1,2 g/polybag, a2 = 1,8 g/polybag dan a3 = 2,4 g/polybag dan faktor pupuk kalsium yaitu b1 = 5 g/polybag, b2 = 6 g/polybag dan b3 = 7 g/polybag. Variabel penelitian meliputi tinggi tanaman,  jumlah daun , jumlah umbi, berat segar umbi dan berat kering umbi. Berdasarkan hasil penelitian menunjukkan pengaruh interaksi pupuk kalium dan pupuk kalsium belum mampu mempengaruhi pertumbuhan dan hasil bawang merah pada tanah gambut. Pemberian pupuk kalium pada dosis 2,4 g/polybag mampu mempengaruhi pertumbuhan tinggi tanaman umur 5 MST dan jumlah daun umur 6 MST. Pemberian pupuk kalsium pada dosis 7 g/polybag memberikan pertumbuhan yang baik pada tinggi tanaman umur 5-6 MST. Pada hasil bawang merah menunjukkan pemberian pupuk kalium dan kalsium belum mampu meningkatkan hasil bawang merah pada tanah gambut.
IDENTIFIKASI EKTOPARASIT PADA IKAN PATIN (Pangasius djambal) DI UPT PERIKANAN BUDIDAYA AIR PAYAU DAN LAUT (UPT-PBAPL) KALIMANTAN BARAT
Authors: Aguilera. R Agnes Rossiana , Sirodjul Ahmad Mulyadi , Rahayu Sri
Published: May 2024

Ektoparasit merupakan parasit yang menyerang bagian luar tubuh ikan, misalnya pada insang, sirip dan kulit. Di Kalimantan Barat budidaya ikan patin salah satunya dilakukan di UPT-PBAPL Kalimantan Barat. Tujuan dilakukannya penelitian ini adalah untuk mengidentifikasi jenis prevalensi dan intensitas ektoparasit yang menyerang ikan patin (Pangasius djambal) di kolam budidaya. Penelitian ini dilaksanakan kurang lebih selama 2 bulan di dua tempat yaitu UPT-PBAPL Kalimantan Barat dan Laboratorium Manajemen Sumberdaya Perairan Fakultas Pertanian Universitas Tanjungpura. Metode yang digunakan dalam penelitian yaitu metode purposive sampling yang dilakukan disetiap kolam berdasarkan ukuran ikan. Hasil pengamatan ditemukan satu jenis ektoparasit. Jenis ektoparasit yang menginfeksi ikan patin (Pangasius djambal) adalah Dactylogyrus sp ditemukan pada organ insang ikan. Prevalensi yang diperoleh selama penelitian pada kolam I yaitu 10% menunjukan tingkat serangan masuk kedalam kategori infeksi sering, kolam II yaitu 25% menunjukan tingkat serangan masuk kedalam infeksi sering, kolam III 35 % menunjukan tingkat serangan masuk kedalam infeksi biasa. Nilai intensitas kolam I yaitu 1,5 kategori rendah, kolam II yaitu 1,8 kategori rendah dan kolam III yaitu 2,14 kategori rendah, nilai intensitas dengan kategori yang rendah merupakan infeksi yang belum berdampak merugikan bagi ikan. Kualitas air di kolam budidaya UPT-PBAPL Kalimantan Barat selama penelitian berada dalam kisaran normal dan mendukung untuk kelangsungan hidup ikan, dengan rata-rata suhu berkisar 29,1-29,60C, pH 6,4-6,8, DO 4,2-5,6 mg/L
POPULASI DAN KEANEKARAGAMAN BAKTERI PELARUT FOSFAT PADA BEBERAPA PENGGUNAAN LAHAN DI KECAMATAN SEBAWI KABUPATEN SAMBAS
Authors: Cahyadi Redi , Nusantara Rossie Wiedya , Nuriman Muhammad
Published: May 2024

Identifikasi bakteri pelarut fosfat (BPF) diperlukan untuk mengetahui jumlah, keanekaragaman dan kemampuannya melarutkan fosfat pada suatu lahan. Penelitian ini bertujuan untuk menentukan populasi dan keanekaragaman bakteri pelarut fosfat pada tiga tipe penggunaan lahan yang berbeda dan mengkaji kemampuan bakteri dalam melarutkan fosfat menggunakan media pikovskaya. Penelitian dilakukan di Desa Rantau Panjang Kecamatan Sebawi Kabupaten Sambas. Lokasi penelitian merupakan lahan jeruk siam, lahan padi dan lahan jeruk siam tumpangsari padi.Jumlah titik sampel sebanyak 5 titik dari hasil komposit sub-titik untuk setiap lokasi penelitian dengan pengambilan sampel dilakukan dengan sistem diagonal, sehingga dari 3 lokasi penelitian terdapat 15 sampel tanah. Hasil hasil penelitian parameter kimia yaitu nilai pH tanah diketiga lahan tidak jauh berbeda nilainya dengan berkriteria masam ketiganya, untuk P-tersedia tertinggi berada pada lahan jeruk siam dan terendah berada pada lahan jeruk siam tumpangsari padi, sedangan hasil P-total tertinggi berada pada lahan padi dan terendah berada pada lahan jeruk siam tumpangsari padi. Hasil penelitian untuk parameter populasi bakteri pelarut fosfat tertinggi berada pada lahan jeruk siam dan populasi terendah berada pada lahan jeruk siam tumpangsari padi dengan jenis bakteri yang didapatkan yakni Spl, Sp2, Sp3, Sp4, Sp5, Sp6, Sp8, pada lahan padi, Spl, Sp2, Sp3, Sp4, Sp7, Sp8 pada lahan jeruk siam dan Spl, Sp2, Sp3, Sp4, Sp7, Sp8 pada lahan jeruk siam tumpangsari padi. Kemampuan bakteri dalam melarutkan fosfat pada ketiga lahan semua isolat memiliki nilai yang berbeda-beda yang berdasarkan nilai kriteria IKF ( Indeks Kelarutan Fosfat) tergolong dalam kriteria sedang dan tinggi. Jenis BPF yang memiliki kemampuan membentuk zona bening paling tinggi yaitu Sp8 yang dijumpai pada lahan jeruk siam tumpangsari padi.
KAJIAN STATUS KESUBURAN TANAH LAHAN SAWAH PASANG SURUT DI DESA PAL IX KECAMATAN SUNGAI KAKAP KABUPATEN KUBURAYA
Authors: Muharram Reza , Hayati Rita , Krisnohadi Ari
Published: May 2024

Kebutuhan pangan nasional terutama beras meningkat disetiap tahunnya seiring dengan bertambahnya jumlah penduduk. pengembangan pertanian pada lahan rawa pasang surut merupakan salah salah satu upaya dalam menjawab tentang peningkatan produksi pertanian yang makin kompleks. Karakteristik yang menjadi masalah pada lahan pasang surut sebagai lahan pengembangan pertanian yaitu kemasaman tanah yang rendah, ketersedian unsur hara yang relatif rendah terutaman hara Nitrogen, Fospor, Kalium dan  Kejenuhan basa sedangkan kandungan Al dan Fe tinggi Oleh sebab itu, penelitian ini perlu dilakukan guna mengatasi masalah kesuburan pada lahan pasang surut untuk budidaya padi. Penelitian ini bertujuan untuk memberi informasi kesuburan tanah serta saran dosis pemupukkan tanaman padi pada lahan pasang surut. Hasil penelitian menunjukkan bahwa status kesuburan tanah pada ketiga lokasi termasuk dalam kriteria rendah. Berasarkan hasil perhitungan pupuk si semua lokasi penelitian yaitu lahan A pupuk Urea sebanyak 249,80 kg/ha, SP-36 sebanyak 100kg/ha, dan KCl sebesar 0 kg/ha dan Jerami 50 kg/ha, pada lahan B pupuk Urea sebanyak 245,97 kg/ha dan Jerami 50 kg/ha, SP-36 sebanyak 50 kg/ha. Lahan C untuk pupuk Urea 135 kg/ha, SP-36 sebanyak 100kg/ha, dan KCl sebnyak 0 kg/ha, dan Jerami 50 kg/ha.
RESPON PERTUMBUHAN BIBIT KRATOM TERHADAP JENIS TANAH YANG BERBEDA
Authors: Rossalinda Berliana , Astina Astina , Palupi Tantri
Published: May 2024

Kratom merupakan tanaman lokal yang ada di Kapuas Hulu yang digunakan sebagai obat herbal yang dapat dimakan mentah, diseduh seperti teh atau diubah menjadi bubuk, kapsul, tablet maupun cairan. Kratom merupakan tanaman endemik yang tumbuh subur di daerah dekat aliran sungai pada jenis tanah aluvial yang kaya bahan organik, pertumbuhan bibit kratom di habitat yang berbeda dengan asalnya merupakan hal yang sulit. Penelitian ini bertujuan untuk mengetahui pertumbuhan bibit kratom yang terbaik pada media tanah yang berbeda yaitu, pada tanah aluvial, gambut, dan podsolik merah kuning (PMK). Penelitian ini dilaksanakan di Kota Pontianak sejak Februari sampai dengan Mei 2022. Penelitian ini menggunakan Rancangan Acak Lengkap dengan tiga taraf perlakuan uji. Perlakuan yang dimaksud adalah sebagai berikut : t1 = tanah aluvial, t2 = tanah gambut, dan t3 = tanah PMK. Masing-masing perlakuan diulang sebanyak 9 kali. Setiap unit percobaan ada 5 sampel tanaman yang berarti ada 135 tanaman. Pelaksanaan penelitian meliputi persiapan media tanam, persiapan benih kratom, penanaman, dan pemeliharaan. Variabel yang diamati meliputi tinggi tanaman, jumlah daun, volume akar, dan berat kering tanaman. Hasil penelitian menunjukkan bahwa kratom dapat tumbuh dengan baik di mana jenis tanah sangat mempengaruhi pertumbuhan bibit kratom yaitu pada tinggi tanaman dan jumlah daun 2, 5, 8, 11 dan 14 minggu setelah tanam, volume akar dan berat kering tanaman. Media tanam tanah gambut dengan penambahan pupuk kandang ayam dan kapur dolomit memberikan pertumbuhan bibit kratom yang lebih baik dibandingkan dengan media tanam tanah aluvial dan PMK.
PENGARUH KOMBINASI DOSIS PUPUK KANDANG AYAM, KAPUR DAN NPK TERHADAP PERTUMBUHAN DAN HASIL KUBIS BUNGA DENGAN SISTEM BUDIDAYA JENUH AIR DI LAHAN PASANG SURUT
Authors: Hidayat Muhammad Taufik , Nurjani Nurjani , Maulidi Maulidi
Published: May 2024

Kubis bunga merupakan tanaman pertanian yang tergolong familia Cruciferae, berasal dari daerah sub tropis, memproduksi bunga serta merupakan sayuran yang banyak dikonsumsi oleh masyarakat termasuk di Kalimantan Barat. Penelitian bertujuan untuk mendapatkan kombinasi dosis pupuk kandang ayam, kapur dan NPK yang terbaik untuk meningkatkan pertumbuhan dan hasil kubis bunga dengan sistem budidaya jenuh air di lahan pasang surut. Penelitian dilaksanakan di lahan pasang surut yang berada di Golden River Camp, Desa Kalimas, Kec. Sungai Kakap, Kabupaten Kubu Raya. Penelitian berlangsung selama 6 bulan mulai dari Maret – Agustus 2023. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan faktor tunggal yaitu kombinasi pupuk kandang ayam, kapur dolomit dan NPK dengan 6 kombinasi dan 4 ulangan. Jumlah tanaman terdapat 15 tanaman perbedengan terdiri dari 4 sampel pengamatan. Perlakuan yang dimaksud yaitu: A = pupuk kandang ayam 20 ton/ha + kapur dolomit 1 ton/ha + NPK 450 kg/ha, B = pupuk kandang ayam 20 ton/ha + kapur dolomit 1 ton/ha +  NPK 300 kg/ha, C = pupuk kandang ayam 10 ton/ha + kapur dolomit 2 ton/ha + NPK 300 kg/ha, D = pupuk kandang ayam 10 ton/ha + kapur dolomit 2 ton/ha + NPK 450 kg/ha, E = pupuk kandang ayam 10 ton/ha + kapur dolomit 1 ton/ha + NPK 450 kg/ha, F = pupuk kandang ayam 10 ton/ha + kapur dolomit 1 ton/ha + NPK 600 kg/ha. Variabel yang diamati dalam penelitian meliputi: jumlah daun (helai), luas daun (cm2), berat segar tanaman (g), berat kering tanaman (g), berat segar krop (g) dan diameter krop (cm). Hasil pengamatan penelitian didapatkan hasil bahwa kombinasi pupuk kandang ayam, kapur dan NPK terhadap pertumbuhan dan hasil kubis bunga dengan sistem budidaya jenuh air di lahan pasang surut berpengaruh nyata terhadap jumlah daun 6 MST, berat segar tanaman dan berat kering tanaman, namun berpengaruh tidak nyata terhadap jumlah daun 2 MST, 4 MST, luas daun, berat segar krop dan diameter krop. Hasil penelitian menunjukkan bahwa pemberian kombinasi pupuk kandang ayam 20 ton/ha + kapur dolomit 1 ton/ha + NPK 300 kg/ha merupakan dosis terbaik dalam meningkatkan pertumbuhan kubis bunga dengan sistem budidaya jenuh air di lahan pasang surut, sedangkan untuk meningkatkan hasil tanaman menunjukkan berpengaruh tidak nyata tetapi hasilnya cenderung tinggi.
PENGARUH AMELIORAN PUPUK KANDANG AYAM DAN SEKAM PADI BAKAR TERHADAP PERTUMBUHAN DAN HASIL TANAMAN LOBAK PADA TANAH ALUVIAL
Authors: Guido Adrianus , Surachman Surachman , Sasli Iwan
Published: May 2024

Penelitian ini bertujuan untuk mendapatkan dosis terbaik dari pemberian ameliorant sekam padi bakar dan pupuk kandang ayam terhadap pertumbuhan dan hasil tanaman lobak di tanah aluvial. Penelitian ini berlangsung pada Juli - Agustus 2023. Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan satu faktor 6 perlakuan dan 4 ulangan yaitu berupa bahan organik yang terdiri dari Pupuk Kandang Ayam dan Sekam Padi Bakar. Setiap perlakuan terdiri dari 3 sampel tanaman sehingga jumlah tanaman seluruhnya 72 tanaman. Perlakuan yang dimaksud adalah sebagai berikut: A : 15 ton/ha pupuk kandang ayam, setara dengan 360 g/tanaman, B : 20 ton/ha pupuk kandang ayam, setara dengan 480 g/tanaman, C : 25 ton/ha pupuk kandang ayam, setara dengan 600 g/tanaman, D : 10 ton/ha sekam padi bakar, setara dengan 240 g/tanaman, E : 20 ton/ha sekam padi bakar, setara dengan 480 g/tanaman, F : 30 ton/ha sekam padi bakar, setara dengan 720 g/tanaman, setiap perlakuan diulang sebanyak 4 kali. Variabel pengamatan terdiri dari panjang daun, jumlah daun, panjang umbi, diameter umbi, berat segar umbi, berat kering tanaman. Hasil penelitian menunjukkan bahwa  pupuk kandang ayam dosis 25 ton/ha dan pemberian sekam padi dosis 30 ton/ha sama-sama memberikan hasil yang baik terhadap pertumbuhan dan produksi tanaman lobak pada tanah aluvial.
Influence of Strong pi-Acceptor Ligands on Cr-K-edge X-Ray Absorption Spectral Signatures and Consequences on Interpretation of Surface Sites in the Phillips Catalyst
Authors: Kakiuchi Yuya , Shapovalova Svetlana , Protsenko Bogdan , Guda Sergey , Safonova Olga V. , Guda Alexander , Copéret Christophe
Published: May 2024

X-ray absorption spectroscopy (XAS) is one of the most powerful characterization techniques, that has been intensively employed to study the Phillips polymerization catalyst (CrO3/SiO2). While Cr K-edge XAS signatures are used to evaluate the nature of surface (active) sites, they are highly sensitive to oxidation state, geometry and types of ligands, making interpretation challenging. In the specific case of CrO3/SiO2, CO has been particularly used both as a reductant to generate the expected low valent Cr sites and a probe to understand surface Cr sites. Considering the electronic properties of CO, a strong sigma-donor and pi-acceptor ligand, one may wonder the impact of the coordination of CO on Cr on its XAS signature. We herein built a molecular low-valent Cr library bearing isocyanide ligands, which mimic CO as its isoelectronic counterpart, as a model of low-valent Cr sites interacting with pi-acceptor ligand. Cr K-edge XAS augmented with DFT calculations elucidated the profound effect of isocyanide ligand on both XANES and EXAFS regions giving a rise to characteristic features as well as the significant stabilization of low-spin Cr(II/III) species, which potentially alter the ease of interpretation of XAS spectra. Taking the herein demonstrated effect of pi-acceptor ligand into account, experimental Cr K-edge spectra of reduced Phillips catalyst at different temperatures, with/without interaction with CO, were nicely reproduced.
Resonant Frequency Distributions Determine Plasmonic Response of Disordered Nanoparticle Ensembles
Authors: Sherman Zachary M. , Milliron Delia J. , Truskett Thomas M.
Published: May 2024

Understanding how colloidal soft materials interact with light is crucial to rational design of optical metamaterials. Electromagnetic simulations are computationally expensive and have primarily been limited to model systems described by a small number of particles -- dimers, small clusters, and small periodic unit cells of superlattices. In this work, we study the optical properties of bulk, disordered soft materials comprising a large number of plasmonic colloidal nanoparticles using Brownian dynamics simulations and the mutual polarization method. We investigate the far-field and near-field optical properties of both colloidal fluids and gels, which require thousands of nanoparticles to describe statistically. We show that these disordered materials exhibit a distribution of particle-level plasmonic resonance frequencies that determines their optical response. Nanoparticles with similar resonant frequencies form anisotropic and oriented clusters embedded within the otherwise isotropic and disordered microstructures. These collectively resonating morphologies can be tuned with the frequency and polarization of incident light. Knowledge of particle resonant distributions may help to interpret and compare the optical responses of different colloidal structures, correlate and predict optical properties, and rationally design soft materials for applications harnessing light.
Application of Polymer Brush-Shells on Nanoparticles for Controlling Interaction with Serum
Authors: Pavón Carlos , Benetti Edmondo M. , Lorandi Francesca
Published: May 2024

The interaction of nanoparticles (NPs) with biological environments triggers the formation of a protein corona (PC), which significantly influences their behaviour in vivo. This review explores the evolving understanding of PC formation, focusing on the opportunity for decreasing or suppressing protein-NP interactions by macromolecular engineering of NP shells. The functionalization of NPs with a dense, hydrated polymer brush-shell is a powerful strategy to impart stealth properties in order to elude recognition by the immune system. While poly(ethylene glycol) (PEG) has been extensively used for this purpose, concerns regarding its stability and immunogenicity have prompted exploration of alternative polymers. The stealth properties of brush shells can be enhanced by tailoring functionalities and structural parameters, including molar mass, grafting density and polymer topology. Determining correlations between these parameters and biopassivity has enabled to obtain polymer-grafted NPs with high colloidal stability and prolonged circulation time in biological media.
Synthesis of β-(Hetero)aryl Ketones via Ligand-Enabled Nondirected C−H Alkylation
Authors: Bairagi Yogesh , porey sandip , V. C. Vummaleti Sai , Zhang Xinglong , Lahiri Goutam Kumar , Maiti Debabrata
Published: May 2024

β-Aryl ketones are present in various natural products and bioactive molecules. Till now, -aryl ketone has been synthesized through the directing group (DG) approach or Mizoroki-Heck coupling. Herein, we reported a palladium(II) catalyzed dual ligand-enabled non-directed C−H alkylation with arene and heteroarene as a limiting reagent for the synthesis of -(hetero)aryl ketones. The combined influence of 2-methyl quinoxaline and N-acetyl phenylalanine ligands imparts complementary selectivity, facilitating the diversification of drugs and natural products through C−H alkylation. Integrated experimental and computational mechanistic studies demonstrate the C−H activation as both the regio- and rate-determining step. Interestingly, while the Pd−Ag heterobimetallic species is not directly involved in the 1,2-migratory insertion step, it is proposed to play a vital role during the product release phase of the catalytic cycle.
Analysis of the technical and economic viability of upcycling sustainable fish waste for bioproduct production
Authors: Okoro Oseweuba Valentine , Nei Lei , Denayer J.F.M. , Karimi Keikhosro , Shavandi Amin
Published: May 2024

The valorization of fish waste presents a promising avenue for sustainable resource utilization and economic value creation. In this regard, this paper conducted a comprehensive technoeconomic investigation into alternative technologies for the valorization of fish waste. Various technologies, including subcritical water hydrolysis, enzymatic hydrolysis, and anaerobic digestion, were considered in the analysis. Through economic modelling and sensitivity analyses using ASPEN Plus software, the feasibility and economic viability of different valorization strategies, designated as scenarios (a), (b), and (c) for the production of protein hydrolysate, electricity, protein hydrolysate, fatty acids, and electricity only, respectively, were assessed. The results revealed that utilizing subcritical water technology in scenario (b) yields the most economically viable strategy, with its positive Net Present Value (NPVs) of US$31.67 million indicating economic feasibility. Conversely, the NPVs of scenarios (a) and (c) of -US$24.95 million and of -US$12.09 million respectively demonstrated economic infeasibility. Further investigations into the economic viability demonstrated the important role of processing capacities and operating costs on economic feasibility. Despite challenges and uncertainties, the study underscores the potential for sustainable and economically viable utilization of fish waste, offering valuable insights for decision-makers in the seafood industry.
Exploring the stereochemistry-specific tendency for interdigitation in synthetic monomycoloyl glycerol analogs through molecular dynamics simulations
Authors: Heinonen Suvi , Koivuniemi Artturi , Davies Matthew , Karttunen Mikko , Foged Camilla , Bunker Alex
Published: May 2024

Synthetic monomycoloyl glycerol (MMG) analogs possess robust immunostimulatory activity and are investigated as adjuvants for subunit vaccines in preclinical and clinical studies. These synthetic lipids consist of a glycerol moiety attached to a corynomycolic acid. Previous experimental studies have shown that the stereochemistry of the lipid acid moiety affects whether the MMG analogs self-assemble into interdigitated or non-interdigitated structures below the main phase transition temperature (Tm). In this study, we elucidated possible thermodynamic mechanisms governing the phase behavior of MMG analogs by exploring their conformations, interactions, and dynamics using molecular dynamics (MD) simulations. We compared two analogs, MMG-1 and MMG-6, which differ only by the stereochemistry of the lipid acid moiety; the former has a configuration different from the natural MMG, and the latter displays a native-like stereochemistry. Three different membrane states were simulated: 1) a non-interdigitated single bilayer, 2) a non-interdigitated double bilayer, and 3) a fully interdigitated double bilayer. Our results indicate that the propensity for interdigitation of the MMG analogs is linked to the degree to which their hydrocarbon chains are ordered and oriented, and the extent of the intermolecular interactions in their hydrophilic region. This study demonstrates how MD simulations can enhance the molecular understanding of vaccine adjuvants.
Enantioselective Alkylarylation of Olefins with Aliphatic C−H Bonds via Asymmetric Paired Oxidative and Reductive Catalysis
Authors: Zou Long , Zheng Xinyue , Yi Xuezheng , lu qingquan
Published: May 2024

Enantioselective transformations of hydrocarbons to three-dimensional chiral molecules remain a significant challenge in synthetic chemistry. This study uses asymmetric paired oxidative and reductive catalysis (APORC) to promote the enantioselective alkylarylation of olefins through the functionalization of C(sp3)−H bonds in alkanes. This asymmetric photoelectrocatalytic approach enables the facile construction of a wide range of enantioenriched α-aryl carbonyls with excellent enantioselectivity (up to 96% ee) from readily accessible starting materials. Notably, aryl bromides, aryl iodides, and even aryl chlorides were compatible with the developed catalytic system. Mechanistic studies reveal that alkanes and electrophiles are simultaneously activated on the electrodes.
Catastrophe écologique et quotidien dans Les grands cerfs de Claudie Hunzinger
Authors: Chassaing Irène
Published: May 2024

Anticipation and science fiction have long monopolized the theme of environmental disaster, representing it as an accomplished reality that is impossible for humanity to ignore. This study focuses on a novel which, going against the grain, describes the current catastrophe in a realistic manner, considering it as a continuous process, almost imperceptible except in the smallest of its daily manifestations. Les grands cerfs by Claudie Hunzinger evokes the meeting of Pamina, its narrator, with the deer she observes in the Vosges forest where she lives. Through an enlightened and empathetic contemplation of the wild world, Pamina observes its decline and – in deep dismay – questions the inevitability of death.
poétique du « discours des tricots » : l’écriture du quotidien chez Marie Cardinal
Authors: Huchon Cassandre
Published: May 2024

This article proposes a cross-analysis of the correspondence of Franco-Canadian writer Marie Cardinal (1928-2001) and the novel La clé sur la porte(1972) in connection with the theme of the “discours des tricots". By combining the critical tools of gender and literary genetics, I will show how the author's embrace of a taboo, marginal and banal discourse tinges her creative process with a strong subversive dimension. Thus, we will understand how this poetic choice engages Cardinal in a process of distancing himself on the one hand, and on the other hand, with regard to the issues of reception, in what way this discourse implies a global deconstruction of the feminine and so-called “écriture féminine.”
Unlocking the potential: Ultra-wideband
Authors: Anu Jyothy , Anie George
Published: May 2024

The demand for wireless wideband communications is rising as a result of the need to accommodate more users and
deliver more data at faster data rates. Ultra-wideband (UWB) technology, which uses very brief pulses on the order of
nanoseconds to cover a very large frequency spectrum, may be able to tackle this problem. UWB is a wireless
technology with several potential applications that was created to transmit data at extremely high speeds over very short
distances at very low power densities. This paper presents the UWB technology as it currently exists and its potential uses.
The question of how to employ this technology without interfering with the current means of communication is also
investigated. Comparisons with other wireless technologies highlight UWB's superiority in terms of accuracy, power
consumption, and cost-effectiveness. The paper also explores modulation techniques and deployment scenarios,
showcasing UWB's capability to revolutionize short-range communication networks and seamlessly integrate with
existing wireless infrastructures.
Domestic violence in african society: A study of chimamanda adichie's purple hibiscus
Authors: Fidelis Awoke Nwokwu , Prisca O. Bob , Ugochi P. Kwekowe
Published: May 2024

In the 21st century, one of the major roles of the English language in building a corporate youth image for sustainable development, peace, and security in Nigeria is in the area of creative writing. Many scholars are concerned about domestic violence in African society, particularly in Nigeria, especially in Igbo society, where domestic violence is a serious subject matter. Women are subjected to lots of maltreatment, suppression, and relegation to the background as a result of man's chauvinism. The aim of this study is to examine forms of domestic violence in African society by using the work of Chimamanda Adichie's "Purple Hibiscus." The study adopts a brand of snail sense feminism propounded by Akaihi Adimura Ezeigbo as its theoretical framework, while thematic analysis is employed to analyze Adichie's "Purple Hibiscus," which captures many issues of domestic violence and provides insight into the world of domestic violence in African society. Another perspective advocates that African women can overcome domestic violence through education, maturity, and dialogue.
A review of the developed methods for the analysis of lard and pork in food and
pharmaceutical products for halal authentication
Authors: Prihandiwati E. , Rohman A. , Fadzillah N.A. , Betania K. , Nurani L.H. , Ahda M. , Irnawati  , Erwanto Y. , Susanto Y. , Febrianti D.R.
Published: May 2024

The development of an analytical method for halal authentication analysis is urgent to
assure the halalness of food and pharmaceutical products. Halal authentication analysis is
widely applied for the analysis of non-halal components present in food and
pharmaceutical products using some analytical methods. Non-halal components typically
found in products are pig derivatives, any components derived from a pig (Sus scrofa),
and alcohol. Pig derivatives such as lard and pork are widely applied in food and
pharmaceutical products. Some methods based on chromatographic and molecular
spectroscopy are widely applied for the analysis of pork and lard. The analytical responses
obtained during the analysis of lard and pork are complex and involve a large dataset,
therefore, the employment of multivariate data analysis is a must. This review described
comprehensively the application of chemical analytical methods, mainly based on
chromatographic and spectroscopic techniques, for the analysis of pork and pork fat (lard)
in food and pharmaceutical products. The successful application of analytical methods for
halal authentication can assist the regulatory bodies in confirming the absence of non-halal
components in the products which support the implementation of halal certification.
Comparison of heavy metal residue in selected processed canned tomato paste
and bottled tomato sauce using atomic absorption spectrometry
Authors: Veloo K.V. , Tan H.I.
Published: May 2024

Heavy metals are used to manufacture various types of packaging materials such as cans
and glass bottle containers. Determination of heavy metal concentration presence in
processed food products is crucial to identify specific possibly hazard metal contaminants
and create public awareness upon consumption. A total of ten samples consisting of five
different brands of canned tomato paste and bottled tomato sauce sold in Malaysia were
analysed for the concentration of lead (Pb), cadmium (Cd), iron (Fe), zinc (Zn), chromium
(Cr) and nickel (Ni) metals residues by Atomic Absorption Spectrometry (AAS). The
average heavy metals concentration of all samples was arranged in increasing order, Cd >
Ni > Cr > Pb > Zn > Fe. The highest level of metal was Fe (69.93 mg/kg) while the lowest
was Cd (0.01 mg/kg). The concentration of Pb, Cr and Ni in all samples exceed the
permissible limit set by the World Health Organisation 2011, the European Commission
2006 and the Malaysia Food Act and Regulation 1985 except Zn. There is a significant
difference between heavy metal concentrations in canned tomato paste and bottled tomato
sauce (p˂0.05). Therefore, this study suggests efficient monitoring and inspection of both
agricultural environment quality and industrial processing procedures.
Optimization of the stabilizers and cow milk levels for the production of camel
milk-based yogurt using response surface methodology
Authors: Hamad E.M. , Musa K.H.
Published: May 2024

The production of yoghurt from camel milk (CML) is limited due to weak gel formation.
As a trial to produce CML-set-type yoghurt, sixteen treatments were prepared from CML,
cow milk, and stabilizers (gelatin and gum-Arabic; 1:1) using a D-optimal design. A
desirable hardness of set-type yoghurt was obtained from CML (56%), cow milk (42%),
and stabilizers (2%). Another study was designed to choose the best combination of
stabilizers (1, 1.5 or 2% of gelatin in combination with 1% of gum-Arabic). The increased
levels of gelatin resulted in a significant increase (p < 0.05) in the viscosity and
consistency index of yoghurt milk, an increase (p < 0.05) in yoghurt hardness and
viscosity, and a reduction in syneresis (p < 0.05). In conclusion, an acceptable set-type
yoghurt can be produced by using a combination of CML and cow milk (1.3:1) and a
stabilizers' mixture of gelatin (1 or 1.5%) and gum-Arabic (1%).
PERETASAN SITUS MILIK DEWAN KEHORMATAN PENYELENGGARA PEMILU OLEH H DITINJAU DARI UNDANG-UNDANG NOMOR 11 TAHUN 2008 TENTANG INFORMASI DAN TRANSAKSI ELEKTRONIK
Authors: Shadily Felicia , Lisanawati Go , Setiawan Peter Jeremiah
Published: May 2024

Tindakan peretasan terhadap situs milik Dewan Kehormatan Penyelenggara Pemilu (DKPP) dan analisis hukumnya berdasarkan Undang-Undang Informasi dan Transaksi Elektronik (UU ITE). H, pelaku peretasan, dijerat dengan Pasal 32 ayat (1) jo. Pasal 48 ayat (1) UU ITE. H memenuhi unsur sebagai warga negara Indonesia yang sengaja, tanpa hak, mengubah informasi elektronik DKPP. Situs pemerintah tersebut diretas dan diubah tampilannya menjadi melanggar norma. Putusan pengadilan menyatakan H bersalah, namun terdapat kekhilafan dalam penerapan pasal yang tidak mempertimbangkan situs milik pemerintah. Analisis hukum menyoroti pemberatan pidana berdasarkan Pasal 52 ayat (3) UU ITE, mempertimbangkan dampak cybercrime pada sistem pemerintah dan layanan publik. Penelitian juga mengeksplorasi konsep informasi elektronik dan urgensi UU ITE dalam memberikan perlindungan hukum. Terbukti bahwa perbuatan H melawan hukum, tidak ada alasan pembenar yang menghapuskan sifat melawan hukum, sehingga H dapat dipertanggungjawabkan pidana sesuai UU ITE.
EFEKTIVITAS HUKUM ADAT SASI DALAM PELESTARIAN SUMBER DAYA ALAM PADA MASYARAKAT AMBON
Authors: Vindy Alfons , Subroto Aryo
Published: May 2024

Penelitian ini memiliki tujuan untuk mengkaji serta menganalisis pengaturan hukum adat Sasi serta efektivitas hukum Sasi dalam hak pelestarian Sumber Daya Alam pada masyarakat Ambon. Penelitian ini dilakukan dengan menggunakan metode penelitian hukum empiris. Hasil kajian menunjukkan bahwa hukum adat Sasi berperan penting dalam konservasi sumber daya alam masyarakat Ambon. Hukum adat Sasi memberikan pedoman umum tentang perilaku manusia, menetapkan hak-hak perempuan, mencegah kejahatan, mendistribusikan sumber daya alam secara adil, dan menentukan cara mengelola sumber daya alam di laut dan di darat. Berdasarkan analisis data, terdapat kesenjangan antara penerapan hukum adat Sasi dengan kebutuhan nyata untuk melestarikan fungsi lingkungan. Sebagai rekomendasi, diperlukan upaya untuk menciptakan sinergi antara hukum adat Sasi dengan peraturan  yang  berlaku,  seperti  Undang-Undang Pokok Agraria,  untuk  menjamin keberlanjutan konservasi sumber daya alam. Penguatan pemahaman dan kesadaran masyarakat Ambon tentang pentingnya hukum adat Sasi juga menjadi kunci untuk meningkatkan efektivitasnya.
Kata kunci: Sasi, Hukum Adat, Sumber Daya Alam, Masyarakat Ambon.
Growth and survival of milkfish (Chanos chanos), tiger prawns (Panaeus monodon), and oysters (Crassostrea sp.) in integrated multi-trophic aquaculture (IMTA) system with varying stocking densities
Authors: Andika Maulana , Muliani Muliani , Khalil Munawar
Published: May 2024

Integrated Multitrophic Aquaculture System (IMTA) is a sustainable approach to aquaculture, utilizing ecosystem dynamics by integrating various species. This study examined the growth and survival of milkfish (Chanos chanos), tiger shrimp (Penaeus monodon), and oysters (Crassostrea spp.) in IMTA systems with different stocking densities. A 30-day experiment using a nonfactorial-completely randomized design with four treatments and three replications was conducted. The results showed that the implementation of IMTA had no significant impact on the survival rate of milkfish, tiger prawns or oysters in all treatments. However, important variations in growth parameters were observed. Milkfish and tiger prawns showed the highest weight and length gain in treatment B, followed by treatments A, C, and D. Similarly, oysters showed optimal growth in treatment B, followed by A, C, and D, based on weight gain, length, width, and shell thickness. Throughout the study, the physicochemical parameters of the water remained within acceptable ranges, thus supporting ideal growth conditions for the cultured species. These findings underscore the potential of IMTA to increase aquaculture productivity while upholding the principles of environmental sustainability. By optimizing stocking density and encouraging species diversity, IMTA presents a promising avenue for advancing integrated aquaculture practices, in line with the FAO's blue economy concept and ecosystem approach to aquaculture. Future research should concentrate on refining the IMTA system and evaluating its long-term ecological and economic consequences.
Avispas agalladoras y sus parasitoides asociados en el estado de Nuevo León, México
Authors: García-Guzmán Cinthia A. , Gómez-Govea Mayra Alejandra , Flores-Suárez Adriana Elizabeth , Rodríguez-Sánchez Iram Pablo , Ramírez-Ahuja María de Lourdes
Published: May 2024

Las avispas inductoras de agallas pertenecen a la familia Cynipidae; en México se han reportado 205 especies y se ha observado su asociación a más de 30 variedades de encinos (Fagaceae: Quercus). Estos cinípidos y sus parasitoides son muy diversos e incluso se indica que podrían existir aproximadamente 132,000 tipos . Las agallas o cecidias son estructuras anormales en tejidos de las plantas que se forman ante la reacción de un organismo inductor. Esto se ha reportado en hojas, tallos, yemas y frutos, así como en raíces y estolones, con estructuras como nectarios extraflorales, revestimientos de pelos, espinas y resinas adhesivas
Uncovering how in-service teachers are learning about technology in language teaching and learning
Authors: Ito Yurika
Published: May 2024

As emerging technologies rapidly evolve, language teachers in the 21st century face an increasing challenge in determining how to integrate them in their language classrooms. A crucial element for successful technology integration is for teachers to hold sufficient proficiency in technology and adopt active attitudes towards their own professional learning. While an abundance of learning resources is currently available, much still remains unknown about what language teachers are doing to enhance their knowledge and skills in technology. The current study therefore examined how in-service language teachers are learning about technology for instructional purposes and their reasoning behind using specific learning methods. Data were collected through an initial wide-scale questionnaire (n=179), in-depth interviews (n=19), and a post-interview questionnaire (n=19). The findings suggest that the language teachers were relying on a wide variety of online materials and tools—searching the web, reading mailing lists, connecting with teachers via social media, and watching videos, among others. Due to reasons related to finances, geographical locations, time, prevailing social situations, and attitudes, they appeared to be choosing to use informal and self-directed modes of learning over formal teacher training courses. Based on the findings, the current challenges facing language teachers who are learning about technology were identified, and implications for future technology preparation in language teacher education are suggested.
Pendampingan pembuatan herbal instan temulawak bagi ibu-ibu UMKM jamu di daerah pesisir pantai Kenjeran
Authors: Faizah Ana Khusnul , Praditapuspa Ersanda Nurma , Nurrahman Nani Wijayanti Dyah , Kurniawan Wishnu
Published: May 2024

The community is focusing on health drinks which can be utilised as health drinks to achieve community health. However, a number of issues were discovered in partners who produced herbal beverage preparations; as these preparations lack preservatives, they don't survive enough. Making fast herbal preparations that have the same qualities as traditional herbal preparations would help them last longer without sacrificing taste or convenience for users. Partners created instant herbal preparations, examined the flow qualities and flow content, and gained a better understanding of how to produce instant herbs and high-quality herbal medicine as a result of this work.
Potential Impact of Anemia on BALB/c Mice Exposed to an Extremely Low Frequency 50 Hz Magnetic Field with an Intensity of 100 μT and 500 μT
Authors: Sudarti Sudarti , Bektiarso Singgih , Restanti Revi
Published: May 2024

Exposure threshold values (ELF MF) according to WHO, 100 μT for the public and 500 μT for workers, are still being debated. This study examines the potential impact of anemia in BULB/C mice exposed to ELF MF intensities of 100 μT and 500 μT. The research design used a completely randomized design with intensity and duration of exposure to ELF MF as factors. A sample of 60 male Bulb/C mice were divided into 6 groups, 2 groups exposed to ELF MF 100 μT, 2 groups exposed to ELF MF 500 μT, and 2 control groups. Indicators of anemia include the number of erythrocytes, hemoglobin levels and hematocrit using the complete blood count (CBC) method. Two Way Anova analysis (α = 5%), proved that the intensity factor had a significant effect (p < 0.05) on the number of erythrocytes, hemoglobin levels and hematocrit levels, while the length of exposure factor had no effect (p > 0.05). Conclusion: Exposure to ELF MF intensity of 100 μT for 30 days has the potential to cause anemia in BULB/c mice, but there appears to be an adaptive response due to exposure to ELF MF 500 μT
Contribution of Planning, IT Based Communication, Implementation and Follow Up Supervision in Elementary Schools
Authors: Nurrochman Taufik , Harsono Harsono , Narimo Sabar
Published: May 2024

The quality of learning is expected to continue to improve, but supervision management continues to decline. This research aims to identify strategic factors involved in implementing supervision at the elementary school level. Quantitative methods were applied in this research using a census design, where 250 teachers were asked to fill out a questionnaire via the Google Form platform. However, because some teachers were unfamiliar with technology, only 213 teachers responded. The collected data was then analyzed using the Structural Equation Modeling (SEM) method. The findings from this research show that there is a direct influence between supervision planning, IT-based communication and implementation of supervision on supervision follow-up. while supervision planning and IT-based communication influence supervision follow-up through the implementation of supervision
Effectiveness Analysis of Meninting Dam’s Diversion Tunnel Using HEC-RAS
Authors: Ghaisani Salsa Fajrina , Saadi Yusron , Setiawan Ery , I Wayan Yasa , Salehudin Salehudin , Suroso Agus
Published: May 2024

River diversion is a procedure carried out prior to constructing a dam. It is conducted by diverting water from the main river so that the main dam construction work can be executed at a specifically dry area. In Meninting Dam, the diversion system consists of two main structures, namely cofferdam and diversion tunnel that is equipped with a navigation structure at the upstream part of the tunnel. During the construction, cofferdam experienced overtopping on June 17, 2022. The overtopping most likely occurred because of the diversion tunnel’s inability to divert the actual flood effectively during the construction. Therefore, this research aimed to analyse the effectiveness of Meninting Dam’s proposed diversion tunnel against design flood discharge for a return period of 25 years. The data used in this research were the updated version of the ones used to design the whole construction of Meninting Dam’s diversion system, while the flow conditions along the diversion tunnel were analysed using HEC-RAS. At the same time, the analysis was also carried out using the Level Pool Routing Method as a comparison. The analysis results show that the design flood discharge for a return period of 25 years in Meninting Dam Watershed is 265,62 m3/s. This causes the water level along the diversion tunnel reach el. +165,95 m above sea level. Taking into account that the cofferdam crest elevation is at +170,00 m above sea level, it could be concluded that Meninting Dam’s proposed diversion tunnel, which is 4 m wide and 4 m tall is able to divert the design flood discharge for a return period of 25 years effectively. The investigation results in Meninting Dam Watershed show that the main cause of the overtopping was heavy precipitation. This caused the increasing water level at the upstream part of the cofferdam that resulted to its inability to function properly, taking into account that it was still under construction when it occurred