bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis pendapatan petani karet sistem pemasaran lelang di kecamatan kuantan mudik kabupaten kuantan singingi
Authors: Lailatul Budri  
Published: February 2023

Salah satu komoditi unggulan sektor perkebunan adalah karet. Penelitian ini bertujuan untuk menganalisis biaya produksi usahatani karet dan pendapatan bersih yang diterima serta menganalisis efesiensi usahatani karet sistem pemasaran lelang. Penelitian dilakukan di Kecamatan Kuantan Mudik Kabupaten Kuantan Singingi. Penelitian dilaksanakan dengan metode survey dengan pengambilan sampel secara random sampling kepada 23 orang petani karet. Hasil penelitian menunjukkan bahwa biaya produksi yang dikeluarkan petani karet sistem pemasaran lelang yaitu Rp 9.058.465,36/ha/tahun. Pendapatan bersih yang diterima yaitu Rp 6.983.482,79/ha/tahun. Nilai RCR (Return Cost Ratio) yaitu 1,77 hal ini berarti usahatani yang dilakukan memperoleh keuntungan serta dikatakan telah efisien karena nilai RCR yang diperoleh besar dari satu (RCR>1). RCR 1,77 artinya setiap biaya yang dikeluarkan petani Rp.1,00 akan menghasilkan pendapatan kotor sebesar Rp 1,77 dan pendapatan bersih sebesar Rp. 0,77.

Kata kunci: Karet, Pendapatan, Lelang, Efisiensi
Management of Peatland Fires Based on Local Wisdom for Sago Farmers in Sungai Tohor, Tebing Tinggi Timur District, Meranti Islands Regency
Authors: Fransiska Silvia 
Published: February 2023

Kebakaran lahan gambut di Desa Sungai Tohor, Kecamatan Tebing Tinggi Timur, Kabupaten Kepulauan Meranti merupakan kejadian pertama kali bagi masyarakat setempat. Kanalisasi di lahan gambut menjadi penyebab utama kekeringan di lahan gambut. Akibat yang ditimbulkan merugikan petani dari aspek perekonomian, kesehatan, serta sosial. Ekosistem gambut juga mengalami kerusakan. Mata pencaharian utama masyarakat Desa Sungai Tohor yaitu sebagai petani sagu. Upaya penanggulangan dilakukan dengan kearifan lokal setempat. Tujuan dari penelitian ini adalah mendeskripsikan karakteristik petani sagu, menganalisis peran kearifan lokal yang masih ada dalam menanggulangi kebakaran lahan gambut serta menganalisis hubungan antara karakteristik individu petani dengan peran kearifan lokal dalam menanggulangi kebakaran lahan gambut. Penelitian ini dilakukan dengan metode pengambilan sampel menggunakan snowball sampling untuk mencari petani yang sesuai dengan kriteria yang telah ditentukan dengan metode purposive sampling dan alat analisis skala likert, analisis deskriptif, dan analisisi rank spearman. Hasil penelitian ini mendeskripsikan bahwa umur petani umumnya berada pada usia produktif dan berpendidikan, memiliki pendapatan yang tinggi, memiliki luas lahan 5-10 Ha dengan status kempemilikan pribadi dan jarak lokasi lahan 1-3 km dengan pemukiman. Sedangkan instruktur pelatih atau penyuluh, dukungan tokoh masyarakat, peranan kelompok, media informasi dan komunikasi serta dukungan pemerintah termasuk kategori sedang. Upaya penanggulangan kebakaran lahan gambut teridentifikasi pada kegiatan pengetahuan lokal, aspek nilai lokal, keterampilan lokal, sumber daya lokal, dan mekaniasme pengambilan keputusan lokal. Karakteristik petani yang memiliki hubungan dengan peran kearifan lokal yaitu umur, tingkat pendidikan, pendapatan, instruktur pelatih atau penyuluh, dukungan tokoh masyarakat, media informasi dan komunikasi serta dukungan pemerintah.
Priority directions of international airport infrastructure development
Authors: Maksymiuk Yurii , Chulinda Liudmyla , Korchova Halyna , Pochka Kostiantyn 
Published: February 2023

The main focus of international civil aviation is on ensuring the safety of the aviation industry, the need to address the problems of safe and efficient deployment of new types of aircraft, accompanied by the introduction of new types of operators in aviation. Implementation of effective international and European standards, transformation and modernization of airport infrastructure is one of the directions of Ukraine's work in the process of adapting civil aviation legislation to international and European standards, as well as in developing the UN Sustainable Development Goals. Effective operation of international airports in the XXI century is impossible without improving the unification process.
In the context of global competition, the developed infrastructure of international airports is becoming not only one of the factors increasing the country's capacity for economic growth, but also becoming a competitive advantage in the global market. However, with the expansion of air traffic, the issue of imperfection of airport service infrastructure is becoming more acute, there is a need for balanced development of all its elements.
The aviation industry is one of the most innovative in the world, where infrastructure is created through airports and air traffic control. The article analyzes the ways to restore the infrastructure of Ukrainian airports after the cessation of Russian military aggression, which caused incredible destruction, in particular, in the airport industry, describes the requirements for the design and construction of new and reconstruction of existing facilities at the airport. Emphasis is placed on the fact that regardless of the size and intensity of passenger traffic, special requirements are set for airport security. In the construction of new airports, security begins to play an important role during the preparation of relevant documentation. The design of runways, taxiways, platforms and car parks is subject to exceptionally high quality standards in terms of their load-bearing capacity, properties and durability. It is determined that construction on the aerodrome territory is carried out during the planning of territories by developing and approving urban planning documentation taking into account the restrictions on the use of the aerodrome territory (obstacle-limiting areas, aviation noise restriction zones, aeronautical equipment protection zones, as well as restrictions on landing and departure at the aerodrome, use of zones for training and other flights).
The aim of the article is to substantiate with the use of comparative and systematic methods of priority areas of infrastructure development of international airports of Ukraine, identify current trends in development, transformation and modernization of airport infrastructure, as Ukraine's development is influenced by current global trends.
Assessment of interaction the new construction object at full load and the surrounding building in the dense urban development conditions
Authors: Prusov Dmytro 
Published: February 2023

The work is devoted to research the impact of a new building at full load after completion of its construction has been investigated through an assessment of the interaction with the building envelope, the ground mass of the base and the foundation of the existing five-story building, in comparison with the assessment of the impact of a deep excavation in the process of engineering preparation for this construction, based on the developed methodology for studying the interaction of new construction objects and nearby buildings in complex engineering and geological conditions and dense development conditions.
For numerical studies of the stability of the combined space, the proposed methodology has been used, which is built on the initial relations of the variational equations of equilibrium and the equation of the load surface in the six-dimensional stress space, which is a development of the theory of the limit stress state of the soil half-space based on the introduction of an extended yield criterion for a plane problem of the nonlinear theory of elasticity and plasticity, which provides for the determination of the value of the second critical load, at which solid sections of the ultimate stress state appear in the soil half-space.
From the analysis of the movements of the nodes located on the vertical face of the «wall in the soil» structure (retaining wall of the pit), it can be concluded that the transverse displacements of the retaining wall compared to the calculations according to the first option have changed to the opposite, which is associated with the formation of a sliding prism under the passive pressure on the retaining wall from the side of the pile foundation of the new building. This indicates a change in the stress-deformation state of the soil base of the existing building, from the influence of the deep excavation during the construction process, which was evaluated according to the first version of calculations, to the impact of the new building after the end of construction, which was analyzed according to the second version of calculations. In this way, the change in the stress-deformation state of the main urban building is determined, which is a criterion for determining the impact of adjacent construction in the urban area on the condition of the ground bases and foundations of adjacent buildings, their preservation and ensuring safe operation.
Determination of the form of loss the freight cars stability taking into account the gap in the rail track
Authors: Shvets Anzhela 
Published: February 2023

Derailments of freight cars occur for various reasons: breakdown of equipment or individual parts; maintenance deviations in the track superstructure; incorrect order of passing and making-up trains; violation of normal dynamic conditions, which occurs due to hunting and unfavorable traffic conditions on a curved track section. In order to avoid derailments and ensure a stability coefficient, the restrictions expressed using certain indicators are set. These indicators determine the conditions for lifting the wheel above the rail head, overturning the rail and widening the railway track. One of the most widely used restrictions is the restriction expressed in terms of the ratio of the lateral force acting on the wheel to the vertical force.Rolling stock derailment when the wheel flange is rolled onto the rail head, as a rule, is facilitated by longitudinal compressive forces.The presence of longitudinal forces in the train results in unloading the wheels moving along the outer rail line, and overloading the wheels moving along the inner rail line.The stability loss of freight cars as part of a train should be divided into two stages: stability loss of the body on suspension springs and the stability loss of the wheel set, which results directly in the derailment.
The work is aimed to study the influence of longitudinal quasi-static compressive forces arising during stationary modes of train movement on the form of freight cars’ instability. The relevance of this study relates to the need to control the longitudinal forces arising during the train movement, taking into account the increase in speeds, masses and lengths of trains, especially freight trains, by in the locomotives power increase. The use of the above methodology will improve the stability of freight rolling stock, justify the cause of derailment, as well as develop and put into practice technical measures to prevent the lift of the carriages, widening and shear of the track.
DINAMIKA PARIWISATA RAMAH LINGKUNGAN/ GREEN TOURISM PASCA PANDEMI (SUATU TINJAUAN PUSTAKA)
Authors: ANDREA GARSIONE AGNI 
Published: February 2023

C-19 sangat berdampak pada aktivitas sehari-hari dan salah satu sektor paling berdampak adalah pariwisata karena aktivitas pariwisata dapat dirasakan dan dinikmati secara langsung dengan cara mengunjungi destinasi pariwisata. Berbagai upaya pemerintah untuk mencegah penularan C-19 dan salah satu upayah pemerintah adalah mengubah situasi pandemi menjadi endemi dengan penerapan protokol kesehatan. Dampak positif dari C-19 dapat dirasakan melalui perbaikan kualitas cuaca yang terdegradasi oleh aktivitas masyarakat salah satunya adalah kepariwisataan. Dampak-dampak positif menjadi pendorong green tourism untuk mulai di terapkan pada pembanguan pariwisata berkelanjutan agar perbaikan lingkungan dapat tercapai. Penerapan green tourism dapat di buktikan melalui sertifikasi yang diselenggarakan oleh lembaga sertifikasi agar tercipta destinasi yang ramah lingkungan dan sebagai nilai tambah saat melakukan promosi destinasi pariwisata. Penelitian ini menggunakan metode diskriptif dengan cara menarasi dan mereviewkan hasil-hasil penelitian terdahulu, hingga kabar berita dengan tema pariwisata ramah lingkungan/ green tourism. Melalui review artikel terdahulu maka kajian pustaka mengenai green tourism dapat berkembang sebagai literatur kepariwisataan.

Kata kunci: Green tourism, C-19, Sertifikasi, Digitalisasi.
POTENSI DAN DAYA TARIK WISATA ARBORETUM FAKULTAS KEHUTANAN UNILAK
Authors: SADJATI EMY , YENRI ERVA , SUKMA DODI 
Published: February 2023

Arboretum merupakan suatu hutan dengan luasan yang tergolong kecil yang biasanya digunakan untuk berbagai macam bentuk kegiatan akademis kampus. Arboretum juga dapat digunakan sebagai tempat praktek dan penelitian bagi mahasiswa fakultas kehutanan. Arboretum memiliki potensi dan daya tarik wisata, yang terdiri dari keanekaragaman jenis flora seperti gaharu, kantong semar, serta berbagai macam jenis meranti ada disana. Untuk jenis fauna seperti monyet ekor panjang serta berbagai macam jenis burung banyak terdapat di Arboretum. Daya tarik wisata yang juga disebut obyek wisata merupakan potensi yang menjadi pendorong kehadiran wisatawan ke suatu daerah tujuan wisata. Tujuan penelitian adalah mengidentifikasi potensi dan daya tarik arboretum Fakultas Kehutanan Unilak. Metode yang digunakan adalah metode survei (survey methods) dengan teknik kuesioner yaitu pengukuran potensi dengan cara mengukur persepsi dengan menggunakan One Score-One Indicator System, yakni pemberian skor 1 (satu), untuk 1 (satu) indikator, dengan skala yang digunakan adalah 1-7 (merupakan pengembangan dari skala Likert 1-5). Penggunaan skala 1-7 diterapkan karena sesuai dengan karakter masyarakat Indonesia yang mengartikulasikan suatu nilai dengan sangat detail. Nilai skor 1-7 diberikan pernyataan sebagai berikut: (1) sangat tidak menarik (2) tidak menarik (3) agak tidak menarik (4) ragu-ragu (5) agak menarik (6) menarik, dan (7) sangat menarik. Berdasarkan hasil penelitian menunjukan bahwa Keunikan 4.79 agak menarik, Keindahan 5.83 menarik, Kelangkaan 4.38 cukup, Ketepatan Waktu 4.42 cukup, Aksesibilitas 5.00 agak menarik, Sensitifitas 4.56 agak menarik, Fungsi Sosial 4.50 agak menarik. Nilai rataan total Potensi dan Daya Tarik 4.78 artinya agak menarik dengan demikian arboretum Fakultas Kehutanan Unilak bisa menjadi salah satu objek daya tarik wisata di Kota Pekanbaru. Serta yang perlu ditambah adalah sarana dan prasarana pendukung wisata, promosi wisata.

Kata kunci: daya tarik, potensi, wisata
Plerixafor and resatorvid inhibit hepatitis B virus in vitro by upregulating elongation factor Tu GTP-binding domain containing 2
Authors: Cai Jinyuan , Li Yuwen , Hu Pingping , Xu Ruirui , Yuan Hui , Zhang Wen , Feng Tiantong , Liu Rui , Li Wenting , Zhu Chuanlong 
Published: February 2023

BackgroundAn increase in the demand for a functional cure has accelerated research on new methods of therapy for chronic hepatitis B, which is mainly focused on restoring antiviral immunity for controlling viral infections. Previously, we had described elongation factor Tu GTP-binding domain containing 2 (EFTUD2) as an innate immune regulator and suggested that it might be an antiviral target.MethodsIn this study, we generated the Epro-LUC-HepG2 cell model for screening compounds that target EFTUD2. Plerixafor and resatorvid were screened from 261 immunity and inflammation-related compounds due to their ability to highly upregulate EFTUD2. The effects of plerixafor and resatorvid on hepatitis B virus (HBV) were examined in HepAD38 cells and HBV-infected HepG2-NTCP cells.ResultsThe dual-luciferase reporter assays showed that the EFTUD2 promoter hEFTUD2pro-0.5 kb had the strongest activity. In Epro-LUC-HepG2 cells, plerixafor and resatorvid significantly upregulated the activity of the EFTUD2 promoter and the expression of the gene and protein. In HepAD38 cells and HBV-infected HepG2-NTCP cells, treatment with plerixafor and resatorvid strongly inhibited HBsAg, HBV DNA, HBV RNAs, and cccDNA in a dose-dependent manner. Furthermore, the anti-HBV effect was enhanced when entecavir was administered along with either of the previous two compounds, and the effect could be blocked by knocking down EFTUD2.ConclusionWe established a convenient model for screening compounds that target EFTUD2 and further identified plerixafor and resatorvid as novel HBV inhibitors in vitro. Our findings provided information on the development of a new class of anti-HBV agents that act on host factors rather than viral enzymes.
The value of next-generation metagenomic sequencing in pathogen detection of pleural effusions and ascites from children with sepsis
Authors: Liu Gang , Wang Lijuan , Li Xuming , Zhang Ye , Long Hu , Wang Yi , Gao Hengmiao , Xia Han , Qian Suyun 
Published: February 2023

ObjectiveTo investigate the diagnostic value of metagenomic next-generation sequencing (mNGS) using pleural effusion and ascites from children with sepsis.MethodsIn this study, children with sepsis or severe sepsis and appeared pleural or peritoneal effusions were enrolled, of whom the pleural effusions or ascites and blood samples were conducted pathogen detection using both conventional and mNGS methods. The samples were divided into pathogen-consistent and pathogen-inconsistent groups based on the consistency of mNGS results from different sample types, and into exudate and transudate groups based on their pleural effusion and ascites properties. The pathogen positive rates, pathogen spectrum, consistency between different sample types, and clinical diagnosis consistency were compared between mNGS and conventional pathogen tests.ResultsA total of 42 pleural effusions or ascites and 50 other type samples were collected from 32 children. The pathogen positive rate of the mNGS test was significantly higher than that of traditional methods (78.57% vs. 14.29%, P &lt; 0.001) in pleural effusion and ascites samples, with a consistent rate of 66.67% between the two methods. Nearly 78.79% (26/33) of mNGS positive results of the pleural effusions and ascites samples were consistent with clinical evaluation, and 81.82% (27/33) of these positive samples reported 1-3 pathogens. The pathogen-consistent group outperformed the pathogen-inconsistent group in terms of consistency with respect to clinical evaluation (88.46% vs. 57.14%, P = 0.093), while there was no significant difference between the exudate and transudate groups (66.67% vs. 50.00%, P = 0.483).ConclusionCompared to conventional methods, mNGS has great advantages in pathogen detection of pleural effusion and ascites samples. Moreover, consistent results of mNGS tests with different sample types provide more reference values in clinical diagnosis.
Infective endocarditis: Do we have an effective risk score model? A systematic review
Authors: Rizzo Victoria , Salmasi Mohammad Yousuf , Sabetai Michael , Primus Christopher , Sandoe Jonathan , Lewis Michael , Woldman Simon , Athanasiou Thanos 
Published: February 2023

BackgroundInfective endocarditis (IE) is a rare, highly morbid condition with 17% in-hospital mortality. A total of 25–30% require surgery and there is ongoing debate with regard to markers predicting patient outcomes and guiding intervention. This systematic review aims to evaluate all IE risk scores currently available.MethodsStandard methodology (PRISMA guideline) was used. Papers with risk score analysis for IE patients were included, with attention to studies reporting area under the receiver-operating characteristic curve (AUC/ROC). Qualitative analysis was carried out, including assessment of validation processes and comparison of these results to original derivation cohorts where available. Risk-of-bias analysis illustrated according to PROBAST guidelines.ResultsOf 75 articles initially identified, 32 papers were analyzed for a total of 20 proposed scores (range 66–13,000 patients), 14 of which were specific for IE. The number of variables per score ranged from 3 to 14 with only 50% including microbiological variables and 15% including biomarkers. The following scores had good performance (AUC &gt; 0.8) in studies proposing the score (often the derivation cohort); however fared poorly when applied to a new cohort: PALSUSE, DeFeo, ANCLA, RISK-E, EndoSCORE, MELD-XI, COSTA, and SHARPEN. DeFeo score demonstrated the largest discrepancy with initial AUC of 0.88, compared to 0.58 when applied to different cohorts. The inflammatory response in IE has been well documented and CRP has been found to be an independent predictor for worse outcomes. There is ongoing investigation on alternate inflammatory biomarkers which may assist in IE management. Of the scores identified in this review, only three have included a biomarker as a predictor.ConclusionDespite the variety of available scores, their development has been limited by small sample size, retrospective collection of data and short-term outcomes, with lack of external validation, limiting their transportability. Future population studies and large comprehensive registries are required to address this unmet clinical need.
Stratigraphic expression of the Paleocene-Eocene Thermal Maximum climate event during long-lived transient uplift—An example from a shallow to deep-marine clastic system in the Norwegian Sea
Authors: Sømme Tor O. , Huwe Simone Isabelle , Martinsen Ole J. , Sandbakken Pål Trygve , Skogseid Jakob , Valore Lucas A. 
Published: February 2023

Seismic geomorphology and stratigraphic analysis can reveal how source-to-sink systems dynamically respond to climatic and tectonic forcing. This study uses seismic reflection data from the Norwegian Sea to investigate the stratigraphic response to a short-lived (0.2 Myr) period of climate change during the Paleocene-Eocene Thermal Maximum (PETM), superimposed on a long-lived (∼8 Myr) period of hinterland uplift. The data show that long-term uplift resulted in ∼300 m of relative sea-level fall, forced regression and formation of incised valleys during the latest Paleocene-earliest Eocene. The short-lived PETM climate perturbation at ∼56 Ma changed the transport dynamics of the system, allowing sediment to be bypassed to wide channel complexes on the basin floor, feeding a large mud-rich basin-floor fan more than 50 km into the basin. Our analysis also suggest that sediment supply was up to four times higher during the PETM compared to earlier and later periods. Maximum regression at ∼55.5 Ma resulted in the formation of a subaerial unconformity. The style of subaerial incision was dictated by shelf accommodation and proximity to the area of direct sediment input. Out-of-grade shelves and slopes sourced by littoral drift were prone to incision, but direct-fed and graded shelves and slopes were not. Despite maximum regression, sediments were not transported significantly beyond the toe-of-slope aprons, suggesting that rapid climate change was more efficient in bypassing sediment to the deep-water than low stands of sea level. As long-term accommodation increased after the PETM, deltas were still able to reach shelf edge, but periods of maximum regression were not associated with deep incisions along the outer shelf and only smaller canyons and gullies formed. The shelf-slope wedge was finally transgressed at ∼51 Ma. The age of deep valley incisions overlaps with the time of subaerial erosion in the East Shetland and Faroe-Shetland basins, suggesting a common mechanism for North Atlantic uplift around 55–56 Ma. Other seismic stratigraphic surfaces do not seem to be regionally time-equivalent, highlighting the importance of local controls on internal architecture of shelf-slope wedges. This study demonstrates the high-resolution stratigraphic response to long- and short-term external forcing together with intrinsic processes and can help identify similar relationships in other areas.