bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamically tunable terahertz metamaterial sensor based on metal–graphene hybrid structural unit
Authors: Zhang Dapeng , Li Zhi , Fan Kefeng , Chen Tao , Jia Bowen , Pan Shubao , Tang Yuan 
Published: February 2022

By verifying the electromagnetic response characteristics of graphene in the low terahertz (THz) band, a terahertz metamaterial sensor is proposed. The unit cell of the metamaterial sensor is a split ring resonator nested square ring resonator. The split ring resonator with four gaps is made of lossy metal, and the square ring resonator is formed by graphene. This structure can produce two high-performance resonant valleys in the transmission spectrum of 0.1–1.9 THz. The quantum interference between metal–graphene hybrid units also produces a reverse electromagnetically induced transparency (EIT)-like resonant peak between the two resonant valleys. Compared with the bimetallic ring resonator having the same shape and size, the sensor can dynamically adjust the position of the lower frequency resonant valley, thus, realizing the active tuning of the bandwidth and amplitude of the EIT-like resonant peak. The results demonstrate that the proposed sensor has a better sensing performance and can improve the detection precision by tuning itself to avoid the interference of environmental factors and the properties of samples. Combined with the advantages of convenience, rapidity, and non-damage of terahertz spectrum detection, the sensor has a good application potential to improve the unlabeled trace matter detection.
Magnetization dynamics in the YIG/Au/YIG magnon valve
Authors: Li Zhiyi , Zhang Xiuye , Zhang Dainan , Liu Bo , Meng Hao , Xu Jiapeng , Zhong Zhiyong , Tang Xiaoli , Zhang Huaiwu , Jin Lichuan 
Published: February 2022

The magnetization dynamics of an yttrium iron garnet (YIG)/Au/YIG magnon valve was investigated using broadband ferromagnetic resonance. The material characterizations of YIG/Au/YIG were performed using cross-sectional scanning transmission electron microscopy, x-ray diffraction spectroscopy, x-ray photoemission spectroscopy, Raman spectroscopy, and UV–visible spectroscopy. Asymmetric Fano resonance in the YIG/Au (60 nm)/YIG magnon valve structure was observed experimentally, and the two coupled oscillators model was used to describe the source of the Fano resonance qualitatively. We also provide a quantitative description of the Fano resonance and extract the Fano factor, which is an important feature that can be used to define the interaction sign. This represents the first attempt to apply the Fano resonance to magnetization dynamics. The spin wave resonance modes excited by the Au nanoparticles (NPs) surface plasmons were also observed in a YIG/Au NPs/YIG structure. Our findings confirm the occurrence of magnetic Fano resonance in the YIG/Au/YIG magnon valve and pave the way toward the development of quantum information devices based on magnon valves.
Immediate prepartum supplementation accelerates progesterone decline, boosting passive immunity transfer in tropically adapted beef cattle
Authors: Silva L. F. P. , Muller J. , Cavalieri J. , Fordyce G. 
Published: February 2022

Context Poor nutrition of late-pregnant cows is highly prevalent in the dry tropics and associated with high levels of calf mortality. Aims It was hypothesised that supplementation with protein to prepartum cows would restore the normal decline in progesterone prepartum and increase the transfer of passive immunity to calves, with this being further enhanced by inclusion of yeast fermentation products. Methods In total, 84 heifers and 45 cows were selected for a completely randomised block design, with the following three dietary treatments: unsupplemented, receiving ad libitum low-protein hay only; hay supplemented with 1 kg/day of protein; and supplementation with both protein and 14 g/day of a Saccharomyces cerevisiae fermentation product. Supplementation occurred for an average of 14 days before calving. Cow plasma samples in the week before parturition, and the first plasma sample after parturition, were analysed for progesterone and metabolites. Newborn calves were weighed and blood-sampled three times per week during the first 2 weeks after birth. The first two calf plasma samples were analysed for total protein, albumin, and globulin concentrations. Data were analysed using a mixed-effects model and the decline of progesterone concentration over time was modelled using a non-linear segmented model. Key results Prepartum supplementation reduced cow liveweight loss, increased glucose, reduced fat mobilisation metabolites and tended to increase average daily weight gain of calves. Including yeast fermentation products in the supplement tended to increase the transfer of passive immunity to calves. Supplementation decreased plasma progesterone before parturition and including yeast fermentation products further advanced the initiation of progesterone decline. Conclusion Protein supplementation of protein-deficient beef cows during late pregnancy helps restore the normal decrease in progesterone before parturition. Implications This study identified a plausible hormonal mechanism explaining how poor nutrition around birth can increase calf loss, opening new possibilities for short-term diet management strategies to reduce calf mortality and improve calf health.
Interprofessional education in interpreter training
Authors: Hlavac Jim , Harrison Claire , Saunders Bernadette 
Published: February 2022

AbstractInterpreters work with clients from many professions and in different contexts and settings. A facilitator of interpreters’ ability to provide an optimal interlingual transfer of another’s speech or signing is possessing knowledge of other professionals’ perspectives and goals. Interprofessional education is a teaching or learning method that includes learning activities in which trainees from two or more disciplines interact with each other in real or simulated settings. This article reports on the participation of interpreting students in interprofessional education with medical and social work students over a three-year period. Responses were obtained from 109 interpreting students across four medicine–interpreting and three social work–interpreting sessions relating to their perception of the roles of the other student groups pre- and post-intervention and how best to work with each group. Thematic analysis of the data revealed that pre-intervention knowledge of the doctors’ work was significant while knowledge about social work was varied; there were high levels of agreement that knowledge of the other group had increased post-intervention; future intentions were related to greater awareness of a briefing, applying knowledge of the relevant genre of spoken interaction, the need for the allophone interlocutors to establish rapport with each other, and awareness of source speakers’ tone and intent in addition to form and content.
Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena
Authors: Priwiratama H , Rozziansha T A P , Prasetyo A E 
Published: February 2022

Abstract
A field study to test the efficacy of Bacillus thuringiensis subsp. Kurstaki against Tirathaba rufivena, the oil palm bunch moth, has been conducted in early mature (5-year-old) oil palm in Kalianta Estate, Riau. The experiment was conducted following a randomized complete block design, consisting of five concentration treatments, namely 0, 2, 4, 6, and 8 ml/L of suspension. The B. thuringiensis was sprayed directly onto the inflorescences and fruit bunches of selected palm samples every week for a month duration. The result showed that the intensity of T. rufivena attack was continuously declined since the first week after B. thuringiensis application. The decline of attack intensity is in line with the reduction of the larvae population in the affected fruit bunches. This trial demonstrated that B. thuringiensis had high efficacy against the bunch moth with an efficacy value of 74.90 %, 91.18 %, 96.96 %, and 94.77 % achieved at two weeks after application at the concentrations of 2, 4, 6, and 8 ml/L, respectively. This result suggests that B. thuringiensis at the concentration of 4-8 ml/L can be used as a sustainable option for controlling T. rufivena in oil palm plantations.
Genotype by yield*trait biplot analysis to evaluate Jatropha curcas genotypes based on multiple traits
Authors: Purwati R D , Anggraeni T D A , Machfud M 
Published: February 2022

Abstract
Jatropha hybridization conducted in ISFCRI has resulted in genotypes with various agronomic traits. The biplot analysis was used to evaluate the relationship between agronomic and yield trait, the genotype by trait (GT), and genotype by yield*trait (GYT). Ten genotypes were planted in Pasirian, Lumajang, East Java from 2018 to 2019. Ten parameters were observed namely: plant height, harvest time, number of branches per plant (primary, secondary and tertiary branches), inflorescence number per plant, fruit cluster number per plant, fruit number per plant, 100 seed weight, and seed weight per plant. Based on GT biplot and Pearson Correlation, there was a strong positive correlation between yield and plant height, tertiary branch, fruit cluster, inflorescence number, and seed weight. The GYT biplot showed that genotype No. 6 had the best performance in combining yield and primary branch, secondary branch, and inflorescent number. The genotype No. 10 had the largest values in combining yield with the seven other traits. In this study, the GYT biplot approach can be used to identify the best genotypes in correlation between yield with other traits. Therefore, this approach can be applied to overcome the problem of genotypes selection based on several traits, in the Jatropha breeding program.
Improving the production and quality of virginia tobacco through topping and suckering : A Review
Authors: Diana N E , Supriyadi  , Jamil A H , Yogi Y A , Nugraheni S D , Verona L 
Published: February 2022

Abstract
Tobacco production in Indonesia continues to increase along with the number of requests tobacco industry due to the shift in consumer tastes from smoking kretek cigarettes to white. Virginia’s domestic tobacco has not been able to cover the needs of the tobacco industry, so part of this is fulfilled from imported tobacco. In terms of cultivation, the emergence of flowers resulted in stunted growth and decreased quality of tobacco. Increasing tobacco production and quality can be done by applying Good Agriculture Practices (GAP) by cutting the top (topping) and removing side shoots (suckering). The timely application of topping and suckering can increase the production of tobacco leaf accompanied by an increase in the quality of the tobacco leaves produced. Based on the research results, it is known that topping and suckering treatment can increase production by 60-80% and nicotine levels by 40-60%. The application of suckericide can reduce labour costs without reducing the yield, quality, and chemical content of tobacco. The impact of increasing production and quality of Virginia tobacco will increase farmers’ bargaining power and economy.
The effectiveness of yam (Pachyrhizus erosus) juice in maintaining the viability of Trichoderma viride spores
Authors: Samsudin  , Khaerati  , Amaria W 
Published: February 2022

Abstract

Trichoderma viride is a potential biological agent to control main estate crop diseases. One of the disadvantages of this fungus is susceptible to ultraviolet (UV) from sunlight. This study aimed to evaluate the effectiveness of yam juice (YJ) in protecting T. viride spores against UV exposure. The research was conducted from March to July 2019 at the Plant Protection Laboratory of IIBCRI, Sukabumi. The suitability as a growth medium was performed by incorporating 0%, 1%, 5% 10%, and 20% concentration of YJ into potato dextrose agar (PDA) medium. The spore viability test used a 20% concentration of YJ in the talc carrier medium compared to control (without YJ) and exposing treatment for 0, 60, 120, and 180 minutes. The results showed that YJ was suitable for T. viride. The original viability remaining (OVR) were 77.9%, 32.62%, and 13.67% after exposing 60, 120, and 180 minutes under sunlight, and 40.01%, 35.78%, and 32.62% respectively under UV lamp. The relative efficiency (RE) value of YJ treatment after exposure 60, 120, and 180 minutes under sunlight were 4.72, 3.52, and 4.42 respectively, and under UV lamp were 1.69, 1.65, and 1.73 respectively. YJ effectively protects T. viride spores from UV exposure.
The Use of ISSR markers for clustering sesame genotypes based on geographical origin
Authors: Anggraeni T D A , Fadilah S N , Kusnadi J , Basuki S 
Published: February 2022

Abstract
Sesame (Sesamum indicum) germplasm in Indonesia is very diverse with morphological characteristics that looks very similar. Morphological characteristic is affected by the environment which has resulted into data inconsistencies. Genetic variations in Sesame germplasm markers such as Inter Simple Sequence Repeats (ISSR) could be used to analyze the genetic relationship. This study aimed to determine the genetic relationship between 81 accessions of sesame plants using ISSR markers. The method used in this study is descriptive qualitative with a sample of 81 sesame accessions. The primers were three ISSR primers, namely I2, T21, T22, and one RAPD primer, namely S1, as a comparison primer to the three of those. The analysis produced 29 DNA bands which 100% are polymorphic bands. Through phylogenetic analysis, the sesame collections clustered into seven major groups. There were clear separation of some accessions based on their geographical origin. ISSR markers can identify sesame germplasm diversity and provide helpful information for sesame breeding and germplasm management programs.
The intensity of major pests on pepper (Piper nigrum) in Tanggamus Regency - Lampung Province
Authors: Kardinan A , Maris P , Wahyono T E , Tarigan N , Perkasa G 
Published: February 2022

Abstract
As one of the black pepper production centers in Indonesia, Lampung pepper productivity is quite low compared to other central areas. Lampung produces around 500 kg/ha, quite far from the national average production which is around 796 kg/ha, or even the productivity of other regions such as Bangka-Belitung which has reached 1.2 tons/ha. One of the main problems that cause this is a fairly high pest attack. For this reason, a study was conducted on the intensity of the main pest attack on pepper plants in one of the pepper-producing areas in Lampung, namely Tanggamus Regency. The study was conducted in April-May 2021 by taking 100 plant spots (samples) randomly in the location. The intensity of pest attack is calculated by a scoring system. The results showed that there were three main pests that attacked pepper plants in Tanggamus Regency - Lampung Province, namely the pepper stem borer (Lophobaris piperis) with the intensity of around 38%; Thrips sp. with intensity of about 23% and fruit suckers (Dasynus piperis) with intensity of about 9%.
Identification of potential groundwater and determination of sugarcane planting period in Pantura of West Java
Authors: Nurkhaida R , Rejekiningrum P , Apriyana Y 
Published: February 2022

Abstract
The sugar industry faces several serious problems, including global climate change, which may cause drought. For this reason, research has been carried out in dryland sugarcane plantations to organize the potential planting period in several Sugar Factories (SF) in Tersana Baru, Karangsuwung, Sindang Laut, Jati Tujuh, and Subang. This research aims to (1) identify groundwater potential to determine the depth, distribution, and discharge of groundwater resources and (2) determine the best sugarcane planting period. Identification of groundwater potential is carried out through a geoelectric survey using Terrameter. To calculate the potential of water resources and the amount of water deficit in each phase of sugarcane growth, an analysis of the potential for the planting period was carried out using a crop simulation model by calculating the ETa/ETc ratio. Identifying groundwater potential base on aquifer conditions indicates that shallow aquifer dominates Karang Suwung SF, whereas deep aquifer dominates Tersana Baru SF and Sindang Laut SF. Non-aquifer dominates Jati Tujuh SF and Subang SF. The best planting period for Tersana Baru SF and Karang Suwung SF in November II, for Sindang Laut SF in January I-II, for Jati Tujuh SF in November I-II and for Subang SF on December III.
Soil water availability for crops on landslide deposits in Bompon Sub-Watershed, Magelang
Authors: Aliyyah H L , Pulungan N A H J , Sartohadi J 
Published: February 2022

Abstract
One of the important factors in agricultural practices is the soil water availability for crops. This study was aimed to identify landslide deposits, assess the soil characteristics of each landslide zone, the effect of soil physical characteristics on the soil water availa bility for crops, and determine the availability of water for crops in landslide deposits. The soil sampling was carried out by purposive sampling method at 12 landslide points and 4 zones, i.e. crown, main-scarp, main-body, a nd toe-slope at two soil depths (0-100 cm and 100-200 cm). The data were analyzed with a regression test and standard deviation method. The results showed that the high soil water availability for crops occurred at the toe-slope zone, 0-100 cm depth and at the main-scarp zone, 100-200 cm depth. The soil physical properties clearly correlated with soil moisture content. Based on the soil water a vaila bility level, it might be suitable for annual crops (i.e. cassava, ginger, sweet potatoes, etc.) at the toe-slope zone and perennial crops i.e. Albizia chinensis, etc.) at the main- scarp zone. Therefore, landslides in the Bompon Sub-watershed, Magelang, is potentially utilized for agricultural development.
The Bido variety is an essential genetic material for coconut breeding
Authors: Novarianto H , Mawardi S , Tulalo M A 
Published: February 2022

Abstract
Several tall dwarf and hybrid types coconut were released by IPCRI-IAARD as commercial varieties since more than 40 years ago. Bido is a recently release tall coconut variety having many excellent traits such as early flowering, low height increments, and high yielding. With good cultivation practices, Bido tall variety could flower as early as three years and the first harvest was in 4 years after planting. Bido tall variety yield potential could reach up to 120 nuts/palm/year. As germplasm collections, Bido tall variety was planted in 2017 at Mapanget Experimental Garden. Subsequently, Bido tall variety seed garden was planted in 2018 at Kayuwatu Experimental Garden, North Sulawesi Province. The Bido tall coconut was recently used as parent to generate progenies derived from self- and cross-pollinations. Moreover, the Bido tall variety has been used as male parent and hybridized with some Dwarf coconut varieties to develop hybrid coconut varieties in the future.
Recognition and counting of oil palm tree with deep learning using satellite image
Authors: Nurhabib I , Seminar K B , Sudradjat  
Published: February 2022

Abstract
One of the challenges in oil palm plantation is to accurately the number of palm trees in a unit of area. Knowing the number of trees will contribute to better managerial and operational tasks for fertilization. This requires a method that can be used to calculate oil palm accurately in a quick fashion. This study aims to discuss the method of identifying and counting oil palm trees using a deep learning system based on the YOLO algorithm to process the images captured by a satellite from Google Earth. The system prototype has been successfully built and tested to recognize oil palm trees and to count them in a case study area IPB-Cargill Oil Palm Education Garden, commonly called IPB-Cargill Oil Palm Teaching Farm, is in Singasari, Jonggol, Bogor West Java. Based on the experimental results, the used training dataset using YOLO with 2500 step iterations with a loss value of 0.6 obtained an accuracy values of 85.6%, 98.9% for precision, and 86.6% for recall. This shows that the model is adequate to correctly recognize and to count palm tree objects.
In vitro growth induction of Ceratobasidium theobromae, the causal agent of cacao Vascular Streak Dieback disease
Authors: Giyanto  , Hastika U R , Permana I , Wahyuno D 
Published: February 2022

Abstract
Vascular Streak Dieback (VSD) disease, caused by Ceratobasidium theobromae, has devastated cacao plants in Indonesia and other countries. However, there is limited information on the biology of the fungus, including mass propagation method. This study aimed to find a technique in inducing the growth of C. theobromae as inoculum sources. The stages of research were sampling the plant cacao tissue infected by C. theobromae; induction of mycelia growth on infected cacao tissue using coconut water, glucose, and sucrose; and confirmation C. theobromae by morphology, pathogenicity test on cacao seedling, and genetic. We found characteristic symptoms of VSD disease in cocoa plantations marked by chlorosis in cocoa leaves and blackening of the node on the leaf petiole. The growth induction of C. theobromae could be performed using a 2% glucose solution. The hyaline hyphae, perpendicular branching of hyphae, and a dolipare septate were shown in the hyphae structure. Pathogenicity test of mycelia C. theobromae from infected plant tissue showed typical symptoms of VSD. Genetic confirmation by PCR method successfully amplified specific target DNA of C. theobromae resulted in ± 550 bp amplicon. The result could be performed to propagate C. theobromae inoculum for various purposes in studying VSD disease.
Effect of zeolite and cow manure application on soil nitrogen content in ramie (Boehmeria nivea) plant growth
Authors: Santoso B , Cholid M , Wijayanto R A 
Published: February 2022

Abstract
Ramie productivity can achieve optimum through improving soil fertility and adding cow manure and zeolite to the soil. The research was conducted in 2018 at Karangploso Research Station-ISFRI. The research design used was a completely randomized design with two factors of manure and zeolite, three replications. Cow manure treatments consisted of no cow manure (P0), 2 tons cow manure (P1), 4 tons cow manure (P2), 6 tons cow manure (P3), while zeolite treatments consisted of no zeolite (Z0) and 4 tons zeolite/ha (Z1). The results showed that the application of zeolite and cow manure affected soil properties and the growth of ramie. The combination treatment of fertilizer and zeolite gave various values of pH, N, C-organic, plant height, and the number of leaves, although there was no interaction. The best results were found in treating 6 tons/ha of cow manure and 4 tons/ha of zeolite with pH values: 6.37 and 6.26; N-Total 0.14% and 0.15%; C-Organic: 1.14% and 1.13%, respectively. Treatments of 6 tons cow manure and 4 tons zeolite gave the best hemp growth, namely plant height at 84 (Days After Planting), DAP 123.23 cm and 98.5 cm, and the number of leaves 104 80.