bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ảnh hưởng của chitosan lên sự sinh trưởng của lan <i>Mokara</i> nuôi cấy mô
Authors: Phạm Thị Minh Thu  , Nguyễn Ngọc Thiên Trang  , Huỳnh Kim Đỉnh  
Published: February 2024

Mokara là loài lan đẹp, đa dạng về màu sắc, ưa khí hậu nóng, dai sức và dễ trồng. Vì vậy, có những thời điểm mokara được trồng và nhân giống rộng rãi, đặc biệt bằng phương pháp nuôi cấy mô. Tuy nhiên, gần đây cây cấy mô mokara ít được phát triển vì tốc độ phát triển chậm kể cả trong giai đoạn nhân giống in vitro và chăm sóc in vivo. Trong nghiên cứu này, chitosan được thêm vào môi trường nhân giống nhằm cải thiện tốc độ sinh trưởng của chồi lan, từ đó giảm bớt thời gian nuôi cấy mô. Chitosan tách chiết từ vỏ tôm và mai mực với 3 khoảng phân tử lượng (Mw <10, 30-50 và 80-100 kDa, kí hiệu Mw10, Mw30 và Mw80) và 3 độ deacetyl (72-75, 82-85 và 92-95%, kí hiệu D70, D80 và D90) đã được khảo sát với tiêu chí kích thích chồi lan tăng trưởng về chiều cao. Kết quả cho thấy chitosan tôm, Mw30, D80 sử dụng ở nồng độ 20 ppm là phù hợp cho kích thích tạo chồi và kéo dài chồi. Như vậy, nghiên cứu đã minh hoạ cho tác dụng kích thích sinh trưởng lên thực vật in vitro nói chung của chitosan và mở ra một hướng ứng dụng cho đối tượng lan mokara nói riêng.
Từ khoá: chitosan, lan mokara, sinh trưởng, in vitro
Ảnh hưởng của thức ăn đến sinh trưởng và tỷ lệ sống của cá chiên (<i>Bagarius rutilus</i>) giai đoạn 70-500g nuôi lồng tại vùng hạ lưu sông Lô, tỉnh Phú Thọ
Authors: Triệu Anh Tuấn  , Thái Thanh Bình  
Published: February 2024

Nghiên cứu này nhằm đánh giá ảnh hưởng của các loại thức ăn khác nhau lên sinh trưởng và tỷ lệ sống của cá chiên (Bagarius rutilus) giai đoạn 70-500g nuôi lồng tại vùng hạ lưu sông Lô – Phú Thọ. Cá chiên thí nghiệm có chiều dài ban đầu 22,0-23,5cm/con và khối lượng 70-72,5g/con được nuôi trong các lồng đặt trên sông, mỗi lồng có thể tích 9,0m3. Thí nghiệm được bố trí với 3 nghiệm thức về thức ăn gồm nghiệm thức 1 (NT1): sử dụng thức ăn viên công nghiệp dạng viên chìm; NT2: sử dụng 100% thức ăn cá tạp và NT3: sử dụng cá tạp 70% kết hợp giun quế tươi 30%, mỗi nghiệm thức lặp lại 3 lần. Sau thời gian thí nghiệm 5 tháng, kết quả cho thấy cá chiên sinh trưởng nhanh và đạt tỷ lệ sống cao nhất ở NT3, tiếp đến là NT2 và thấp nhất ở NT1 (p<0,05). NT3 cá đạt khối lượng trung bình 542,7 g/con, chiều dài 29,7 cm/con và tỷ lệ sống 81,9% trong khi đó NT1 đạt khối lượng trung bình 456,4 g/con và tỷ lệ sống đạt 59,7%. Từ kết quả thí nghiệm có thể kết luận hỗn hợp cá tạp kết hợp với giun quế hoặc cá tạp là thức ăn phù hợp để nuôi cá chiên, thức ăn công nghiệp sử dụng trong nghiên cứu này không thích hợp.
Từ khóa: Cá chiên, sinh trưởng, thức ăn, nuôi lồng.
Metals and Minerals
Authors: Crowson Phillip 
Published: February 2024

Abstract
Global political and economic developments shape both the demand for minerals and primary metals and their supply. Overall, demand has moved broadly in step with economic activity over the past 30 years. Notwithstanding the collapse of the Soviet Union and Eastern Bloc countries, demand grew more rapidly in the second half of the period than the first. The performance of individual products within this general trend largely reflects the specific nature of their main end uses. The geographic center of demand has shifted away from the mature industrial economies of North America, Western Europe, and Japan toward the newly industrializing countries of the Pacific Rim, China, and India. Mine production rose with demand, but not always in precise step. New capacity was required not just to meet demand, even where that was static, but also to offset the continuing effects of ore depletion. There were also changes in the location of production in response to geopolitical forces, the depletion of ore reserves, and the changing economics of extraction and processing. The number of mines contracted, especially during the 1990s, and the scale of mining operations was increased in order to achieve the requisite cost savings. Prices fluctuated in response to changing balances between supply and demand, trending downward from the early 1970s until the early 2000s. Most products witnessed at least one sharp price spike during the period, usually with continuing repercussions. Prices picked up from 2003, but generally not back to their earlier peak in real terms. Profitability varied according to the products concerned. In many years the average rates of return on capital employed have been insufficient to cover the risks involved.
This Paper mainly covers the period from the late 1970s to the present day, but with references back to the early 1970s in order to set the scene for many subsequent trends. The mineral industry and its associated primary processing industries are integral components of the global economy. Mineral prices and profitability depend on the interaction between the demand for mineral products and their supply, which are in turn critically dependent on global conditions. Any realistic analysis of the industry has to place it within the context of these global economic and political conditions, and sketch out how the main global influences, both malignant and benign, have altered over the period. The next section of the paper therefore describes the context within which the mineral industries
The Rise of Sustainability
Authors: MacDonald Alistair , Gibson Ginger 
Published: February 2024

Abstract
The risks associated with, geographic locations of, and engagement strategies required by exploration companies have shifted in the last 25 years, largely in response to changing public attitudes and governance approaches. A mixture of growing global environmental consciousness, the rise of international civil society networks, and economic liberalization and government deregulation in the developing world have all played key roles in altering the environment for mineral exploration. Three fundamental tenets of a positive climate for exploration have been altered: access to land, ease and speed of permitting, and the right to mine deposits after discovery. This paper identifies the importance of new stakeholders, including nongovernmental organizations, international financial institutions, and community activist networks; new governance approaches, such as self-regulation, the use of international standards and co-management, and new monitoring and engagement techniques, such as environmental and social impact assessment, thirdparty monitoring, and prior informed consent. The traditional relationship focus between states and corporations has been replaced by constantly evolving relationships among corporations, governments, civil society, and affected communities. Exploration companies, particularly junior companies, must use available tools—early community engagement strategies and available guidance documents from industry associations among them—to adapt themselves to this new focus.
Mine Design and Costs, and Their Impact on Exploration Targets
Authors: Rendu Jean-michel , Santti Scott , Hansen Phil , White Dan 
Published: February 2024

Abstract
Over the last 20 years, utilization of mineral resources has improved dramatically following changes in mine technology and operating practices, resulting in lower costs and increased productivity. Improved deposit modeling methods, better understanding of geotechnical constraints, optimized mine designs, automated production scheduling, new methods of ore control, progress in the design of blasting, loading, and haulage equipment, and changes in operating practices—all contributed to better utilization of manpower and equipment and significantly lowered production costs. Safety and environmental concerns are an integral part of mine design, construction, operation, and closure. But to reap the benefits of these changes, early understanding of the geologic, geochemical, mineralogical, metallurgical, geotechnical, and hydrological properties of mineralized deposits and surrounding areas is increasingly critical.
Assumptions concerning what makes a viable exploration target must always be challenged. Cutoff grades can be lowered. Large, low-grade deposits, including halos around old mines, are viable exploration targets, and small underground deposits still remain economical to mine. Deeper deposits can be considered. Difficult geotechnical environments can be mined safely. Greater care must be taken in the early definition of the type, quality, and quantity of geologic information, which must be collected before a decision is made to open a new mine. Ore control practices are critical to the success of most operations and require ongoing contributions from mine geologists. Successful closure is dependent on attention being given to geologic input throughout the life of the project. Open communications between geologists, mining engineers, metallurgists, environmental engineers, and operators are more important than ever.
predicción masiva como servicio en la RED
Authors: Alonso-Rodríguez Agustín 
Published: February 2024

Las grandes empresas tecnológicas que operan en la Red, han desarrollado, en respuesta a las peticiones de sus clientes, programas infomáticos para el análisis y la predicción de acontecimos, a escala industrial, utilizando series temporales.

En este trabajo, se utiliza el programa de software libre, Prophet para el análisis de la serie cronológica que recoge la evolución del tipo de interés de los Bonos del Tesoro, a 10 años, en España, desde enero de 1980 hasta agosto de 2023.
The best interests of the child in ECJ asylum and migration case law: Towards a safeguard principle for the genuine enjoyment of the substance of children’s rights?
Authors: Frasca Eleonora , Carlier Jean-Yves 
Published: February 2024

This article discusses whether and how the best interests of the child, enshrined in Article 24(2) of the Charter of Fundamental Rights, became an instrument for increased protection of the rights of migrant children and their families in the European Union. First, an overview is presented of the temporal and substantive expansion of the case law of the European Court of Justice reflecting on the use of references to Article 24(2) of the Charter. Then, a range of issues is analysed concerning the interpretation of the legal instruments of the Common European Asylum System, the Family Reunification Directive, and the Return Directive. The ECJ decisions are grouped by sub-topics and presented in chronological order. This analysis allows for a reflection of the evolution of the Court’s interpretation of the best interests of the child in this field of Union law. It is observed that the primary consideration of the best interests of the child is gradually becoming, if not a general principle, at least a safeguard principle for the genuine enjoyment of the substance of children’s rights.
Best Interests of the Child, Migration, Asylum, Family life, Safeguard Principle, Genuine Enjoyment of the Substance of the Rights
Where the Wild Things Are: Animal autonomy in EU Law
Authors: de Witte Floris 
Published: February 2024

This article discusses how EU law makes sense of the encounters between wild animals and humans. Using the case law of the ECJ that involves wolves and hamsters, this article suggests that EU law is faced with the complex challenge of creating legal categories that can articulate and reflect animal autonomy. Two such legal categories are traced. A first focuses on animal agency and their mobility, assimilating – in legal terms – the movement of wild animals to that of persons crossing borders. A second focuses on animal alterity, that is, the fundamental otherness of wild animals. It is argued that only the latter allows us to make legally legible the conditions under which wildness manifests itself – not as a counterpoint to humanness, but as a meeting between species.
animal autonomy, animal agency, animal alterity, Habitats Directive, Birds Directive
Digitization of newspaper for space shaping and ensuring user facility in Dhaka University Library, Bangladesh
Authors: Bhuiyan Mohammad Shakaought Hossain , Islam Md. Monirul , Munshi Md. Nasiruddin 
Published: February 2024

Purpose: The digitization and automation functions of newspaper will have an enormous influence on library and information institutions. The purpose of the study is to explore the digitization process of printed newspaper preserved in Dhaka University library.
Design/methodology/approach: The observational method based on reassessment of the related literature was used in the study. Authors’ experience as well as their managerial and observational involvement in digitization process of printed newspaper is reflected in the study.
Findings: Digital scanners were employed to digitize the newspaper collection, making online accessible scanned editions of printed issues from 1900 to 2022. DocuDex software used to convert papers, and a sizable, sophisticated scanner is being used to scan newspapers into digital form in Dhaka University Library. Every month, on average, 100-200 scholars use the digitized newspapers. The scanner with a camera is used to scan the papers. The scanner operates at a speed of 700 pages per hour (Manually). Apart from scanning newspaper, currently, M.Phil theses, PhD theses, books, and articles are being scanned with this machine.
Research limitations/implications: The premeditated approach used in this study can serve the library practitioners to develop a successful transition from traditional systems to a technology based one.
Originality/value: The study is one of the first attempts to trace the implications of newspaper automation in any university libraries of Bangladesh.
CURRENT STATE OF PLANT COMMUNITIES IN THE TERRITORY OF LAKE BOLSHOYE VAVAYSKOYE
Authors: Popova Yana , Denisova Yanina 
Published: February 2024

This article analyzes the current state of plant communities on the territory of Lake Bolshoye Vavayskoye. The study covers the abundance, distribution and ecological relationships of the plant world.
The article presents the results of field research conducted in different seasons of the year. The composition and structure of plant communities, as well as their functional characteristics, are described. Special attention is paid to the analysis of the impact of anthropogenic activities on the state of plant communities and their biodiversity.
The study found that the plant communities of Lake Bolshoye Vavayskoye are characterized by a high level of biodiversity. In the studied phytocenoses (shrub larch with dwarf cedar, cedar dwarf lingonberry-ledum, lingonberry-lichen larch, fir-spruce moss, fir-spruce shrub, meadow, etc.) grow 283 species of vascular plants, which represent 18.03% of the total number of vascular plants o. Sakhalin, 5 rare plant species listed in the Red Books of the Russian Federation and the Sakhalin Region were also identified, such as Picea glehnii, Taxus cuspidata, Nuphar pumila, Nymphaea tetragona, Arália cordata. However, the study also showed that anthropogenic impact on the lake has a negative impact on the state of plant communities. In particular, signs of water pollution and deforestation have been identified, which leads to a decrease in biodiversity and deterioration of the environmental situation.
The authors of the article draw attention to the importance of preserving this natural resource and its environmental sustainability, since in recent decades the territory has undergone anthropogenic impact. The study also highlights the importance of long-term monitoring and environmental control of the area to ensure the conservation of the lake's biodiversity and ecosystems for future generations. The results of the study may be useful for organizing nature conservation and developing an environmentally sustainable approach to the use of resources in the region.
PRUNELLA L. O’SIMLIGINI KIMYOVIY TARKIBINI O‘RGANISHGA DOIR
Authors: Farmanova Nodira Taxirovna , Nurullayeva Dilobar Xamid qizi , Xalilullayev Murodilla Ubaydulla o’g’li , Nurullayev Arziqul Jo'raqulovich 
Published: February 2024

Insoniyat qadimdan o‘simliklardan oziq-ovqat va dori vositalari olish uchun manba sifatida foydalanib kelgan. Bugungi kunda dorivor o‘simliklar turli kasalliklarni davolashda, oldini olishda, dori vositalari, biologik faol qo‘shimchalar hamda kosmetik vositalarni ishlab chiqarishda asosiy manba bo‘lib qo‘llanilmoqda. Dorivor o‘simlik maxsulotini tibbiyot amaliyotiga joriy etish uchun uning kimyoviy tarkibi va farmakologik faolligi o‘rganilsh zarur. Ushbu maqolada Prunella L. o‘simligi tarkibidagi kimyoviy birikmalar va ularning guruhlari yuzasidan adabiyotlardan to‘plangan ma’lumotlar aks ettirilgan. Dunyoda Prunella L. ni 15 ta turi ma’lum bo’lib, hamma turi farmakologik ahamiyatga ega hisoblanadi. Keltirilgan ma’lumotlar Prunella vulgaris L. turiga taalluqlidir.
Analisa Penjualan Pada Kios Sembako Hasbolah Jhon Di Kampung Kute Panang Kecamatan Kute Panang Kabupaten Aceh Tengah
Authors: Syahidin Syahidin , Ramadhan Masri 
Published: February 2024

Tujuan penelitian ini adalah untuk mengetahui berapa besar penjualan sembako pada kios Hasbolah Jhon di Kampung Kutepanang Kabupaten Aceh Tengah. Pemerolehan data dalam penelitian ini menggunakan dua cara yaitu studi kepustakaan (Library Research), mengumpulkan teori-teori yang bertujuan untuk menyusun landasan teori yang mendukung data dengan jalan menghimpunnya pada Kampung Kutepanang Kabupaten Aceh Tengah. Studi lapangan (Fiel Research), melakukan penelitian langsung mendatangi lokasi dan objek yang diteliti dengan cara wawancara tentang penjualan usaha Sembako, serta pengumpulan data melalui pengamatan langsung pada objek yang diteliti. Untuk menunjang serta mengarah keberhasilan penelitian yang baik, maka penelitian ini bertumpuan pada suatu anggapan bahwa yang menyebabkan peningkatan penjualan selalu berubah-ubah karena disebabkan penetapan harga yang berubah-ubah juga, pelayanan serta keunggulan sembako yang dipasarkan kepada konsumen.
Berdasarkan perhitungan Analisa Penjualan Sembako mengalami peningkatan maupun penurunan yang disebabkan karena dampak perubahan dari siklus ekonomi yang sedang berkembang, pada tahun 2017 penjualan meningkat. Sehingga dapat dilihat Analisa Penjualan diperoleh persamaan P . Q sehingga hasil perhitungan menunjukkan bahwa penerimaan yang di peroleh kios sembako untuk beras selama 5 tahun Rp 13.536.250 dan harga rata-rata beras Rp 148.750, minyak Rp 7.187.511 harga rata-rata Rp 16.333, garam Rp 3.628.000 harga Rp 20.000, telur Rp 7.424.000 harga per papan telur Rp 32.000 dan untuk gula Rp 8.400.000 harga per kg Rp 14.000. Produk yang telah terjual selama 5 tahun beras 1.820 karung, minyak 6.596 kg, garam 907 pcs, telur 930 papan dan gula 600 kg dengan harga Rp 14.000/kg, artinya penjualan usaha sembako tersebut tidak untung dan tidak rugi.
Analisa Swot Pada Kafe Kantin Batas Kota Jalan Takengon-Bireuen Kabupaten Aceh Tengah
Authors: Syahidin Syahidin , Yuniara Ridha 
Published: February 2024

Penulis melakukan penelitian ini pada Kafe Kantin Batas Kota Jalan Takengon-Bireun Kampung Paya Tumpi Kecamatan Kebayakan Kabupaten Aceh Tengah. Tujuan penelitian ini adalah untuk mengetahui kekuatan, kelemahan, peluang serta ancaman yang dimiliki oleh perusahaan dan juga untuk mengetahui alternatif strategi yang dapat dipakai perusahaan. Teknik analisa data yang digunakan adalah analisa SWOT (Strengths, Weaknesses, Opportunities dan Threats). Adapun yang dimaksud dengan analisa ini adalah untuk mengidentifikasi lingkungan internal dan eksternal perusahaan dalam iklim persaingan dengan perusahaan yang bergerak dalam bidang bisnis yang sama. Lokasi penelitian ini pada Kafe Kantin Batas Kota Jalan Takengon-Bireun Kampung Paya Tumpi Kecamatan Kebayakan Kabupaten Aceh Tengah. Objek penelitian adalah Analisa SWOT. Sementara yang menjadi Informan dalam penelitian ini yaitu pemilik dan karyawan pada Kantin batas Kota. Dan untuk metode analisa data yang digunakan adalah deskriptif kuantitatif yaitu metode observasi dan metode wawancara.
Hasil penelitian dan pembahasan menunjukkan bahwa alat yang dipakai untuk menyusun faktor-faktor strategis perusahaan adalah dengan menggunakan matrik SWOT. Matrik ini dapat menggambarkan secara jelas bagaimana peluang dan ancaman eksternal yang dihadapi perusahaan dapat disesuaikan dengan kekuatan dan kelemahan internal yang dimiliki perusahaan tersebut. Matrik dapat menghasilkan empat kemungkinan alternatif strategi. Dengan menggunakan analisa SWOT dapat diperoleh hasil bahwa perusahaan dapat mengambil alternatif strategi ST, WT, SO dan WO. Berdasarkan semua analisa tersebut di atas menunjukkan hasil pembobotan faktor internal dan faktor eksternal pada Kantin batas Kota dapat dilihat dari total skor yang diperoleh dari pengurangan total faktor kekuatan dan faktor kelemahan sebagai sumbu X yaitu sebesar (0,68), sedangkan skor faktor eksternal yang merupakan hasil pengurangan antara faktor peluang dan faktor ancaman sebagai sumbu Y yaitu sebesar (0,49) menunjukkan bahwa posisi usaha untuk strategi pengembangan usaha Kantin Batas Kota berada pada kuadran I, dimana posisi ini sebuah peusahaan maupun Perdagangan memiliki posisi yang kuat dan berpeluang untuk berkembang.
Pengaruh Pendapatan Asli Daerah Terhadap Anggaran Pendapatan Dan Belanja Kabupaten Bener Meriah
Authors: Ramadhan Masri , M Abd. Jalil. 
Published: February 2024

Penelitian membahas tentang Peranan Pendapatan Asli Daerah Terhadap Anggaran Pendapatan dan Belanja Kabupaten Bener Meriah. Penelitian ini bertujuan untuk: (a) Mengetahui berapakah besar Pendapatan Asli Daerah (PAD) Kabupaten Bener Meriah tahun 2005 - 2014; (b) Mengetahui berapakah besar Anggaran Pendapatan dan Belanja Kabupaten (APBK) Bener Meriah tahun 2005- 2014; (c) Mengetahui berapakah besar perananPendapatan Asli Daerah terhadap Anggaran Pendapatan dan Belanja Kabupaten Bener Meriah tahun 2005 - 2014. Penelitian ini dilaksanakan di Kabupaten Bener Meriah dengan objek penelitian adalah Pendapatan Asli Daerah dan Anggaran Pendapatan dan Belanja Kabupaten Bener Meriah. Pengumpulan data di lapangan mengunakan penelitian perpustakaan (Library Research) dan dianalisis secara kuantitatif.
Hasil regresi linier sederhana menggunakan program spssmenunjukkan persamaan Y = 234.768 + 16.099 x. Thitung ≥ Ttabel maka Ho ditolak yakni ttabel (7.515>1.8595), sehingga Ho ditolak dan hipotesis alternatif yang jadi pilihan adalah Hi > 0 Pendapatan Asli Daerah (PAD) Kabupaten Bener Meriah berperan secara signifikan terhadap Anggaran Pendapatan dan Belanja Kabupaten (APBK) Kabupaten Bener Meriah.
Analisa Kualitas Pelayanan Pada Cafe Rindang di Kebayakan Takengon
Authors: M Abd. Jalil , Fatma Mawarni , Syahidin Syahidin 
Published: February 2024

Permasalahan adalah bagaimanakah Analisa Kualitas Pelayanan Pada Café Rindang di Kebayakan Takengon terhadap pelayanan cafe Rindang di Kebayakan Takengon, tujuan penelitian untuk mengetahui sejauh manakah kualitas pelayanan padacafé Rindang di Kebayakan Takengon, yang merupakan salah satu penunjang utama untuk menarik konsumen atau pelanggan. Dalam pembuatan skripsi ini menggunakan teori-teori yang berhubungan dengan kualitas pelayanan, jasa yang mana dalam penelitian ini menggunakan tekhnik pengumpulan data melalui penyebaran quesioner dan wawancara terhadap 50 responden untuk menganalisis data diolah menggunakan skala likert. Berdasarkan hasil penelitian dapat diketahui bahwa Analisa Kualitas Pelayanan Pada Café Rindang di Kebayakan Takengon meliputi faktor keahlian karyawan, kelengkapan menu makanan dan minuman, kecepatan mendapatkan pelayanan, kecepatan dan ketepatan, keramahtamahan, kualitas menu, etika karyawan, ketelitian karyawan dalam memberikan pelayanan, makanan dan minuman modern, dan tarif sudah di berikan secara maksimal.
Adapun hasil skor yang diperoleh dari setiap bentuk analisa kualitas pelayanan yang diberikan pada Café Rindang di Kebayakan Takengon yaitu diperoleh skor dari bentuk Tangible yaitu 154,7 dengan rata-rata 3,1 dengan kategori cukup puas, dari bentuk reliability berjumlah 89,5 dengan rata-rata 3,69 dengan kategori puas dan dari segi responsive dengan jumlah 183,38 dengan rata-rata 3,67 dengan kategori puas, confidance diperoleh skor sebesar 184,98 dengan rata-rata 3,70 dengan kategori puas, serta empathy diperoleh skor sebesar 184,98 dengan rata-rata 3,70 hal tersebut termasuk dalam kategori puas.