bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multiple character of non-monotonic size-dependence for relaxation dynamics in polymer-particle and binary mixtures
Authors: Zirdehi Elias M , Voigtmann Thomas , Varnik Fathollah 
Published: April 2020

Abstract
Adding plasticizers is a well-known procedure to reduce the glass transition temperature in polymers. It has been recently shown that this effect shows a non-monotonic dependence on the size of additive molecules (2019 J. Chem. Phys. 150 024903). In this work, we demonstrate that, as the size of the additive molecules is changed at fixed concentration, multiple extrema emerge in the dependence of the system’s relaxation time on the size ratio. The effect occurs on all relevant length scales including single monomer dynamics, decay of Rouse modes and relaxation of the chain’s end-to-end vector. A qualitatively similar trend is found within mode-coupling theoretical results for a binary hard-sphere mixture. An interpretation of the effect in terms of local packing efficiency and coupling between the dynamics of minority and majority species is provided.
Electronic structure and superconductivity of the non-centrosymmetric Sn4As3
Authors: Marques C A , Neat M J , Yim C M , Watson M D , Rhodes L C , Heil C , Pervakov K S , Vlasenko V A , Pudalov V M , Muratov A V , Kim T K , Wahl P 
Published: April 2020

Abstract
In a superconductor that lacks inversion symmetry, the spatial part of the Cooper pair wave function has a reduced symmetry, allowing for the mixing of spin-singlet and spin-triplet Cooper pairing channels and thus providing a pathway to a non-trivial superconducting state. Materials with a non-centrosymmetric crystal structure and with strong spin–orbit coupling are a platform to realize these possibilities. Here, we report the synthesis and characterisation of high quality crystals of Sn4As3, with non-centrosymmetric unit cell (R3m). We have characterised the normal and superconducting states using a range of methods. Angle-resolved photoemission spectroscopy shows a multiband Fermi surface and the presence of two surface states, confirmed by density-functional theory calculations. Specific heat measurements reveal a superconducting critical temperature of T
c ∼ 1.14 K and an upper critical magnetic field of μ
0
H
c ≳ 7 mT, which are both confirmed by ultra-low temperature scanning tunneling microscopy and spectroscopy. Scanning tunneling spectroscopy shows a fully formed superconducting gap, consistent with conventional s-wave superconductivity.
Necessary and sufficient conditions for the validity of Luttinger’s theorem
Authors: Heath Joshuah T , Bedell Kevin S 
Published: April 2020

Abstract
Luttinger’s theorem is a major result in many-body physics that states the volume of the Fermi surface is directly proportional to the particle density. In its ‘hard’ form, Luttinger’s theorem implies that the Fermi volume is invariant with respect to interactions (as opposed to a ‘soft’ Luttinger’s theorem, where this invariance is lost). Despite it is simplicity, the conditions on the fermionic self energy under which Luttinger’s theorem is valid remains a matter of debate, with possible requirements for its validity ranging from particle-hole symmetry to analyticity about the Fermi surface. In this paper, we propose the minimal requirements for the application of a hard Luttinger’s theorem to a generic fermionic system of arbitrary interaction strength by invoking the Atiyah–Singer index theorem to quantify the topologically-robust behavior of a generalized Fermi surface. We show that the applicability of a hard Luttinger’s theorem in a D-dimensional system is directly dependent on the existence of a (D − 1)-dimensional manifold of gapless chiral excitations at the Fermi level, regardless of whether the system exhibits Luttinger or Fermi surfaces (i.e., manifolds of zeroes of the Green’s function and inverse Green’s function, respectively). The exact form of the self-energy which guarantees validity of a hard Luttinger’s theorem is derived, and agreement with current experiments, numerics, and theories are discussed.
CSI (Customer Satisfaction Index) and IPA (Importance Performance Analysis) of Mandheling Coffee in Medan
Authors: Lubis S N , Fauzia L , Utami D 
Published: April 2020

Abstract
The emergence of various coffee shops makes customers have many choices of coffee shops especially Mandheling Coffee, because many coffee shop competitors will become prospect and opportunity for producer by following trend and lifestyle. This research aims to analyse customer satisfaction and analyse the attributes corrected by Mandheling Coffee. The sampling method used is accidental sampling and the analysis methods used are Customer Satisfaction Index (CSI) and Importance Performance Analysis (IPA). The results showed that Customer satisfaction measurement is 73.15%, it means that customers are satisfied. Attributes that need to be maintained are attributes of taste, aroma, variety of menu, price comparison with quality, advertising media, facilities, presentation speed, transaction speed and attributes that must be corrected, are attributes of brand, decorations, and barista explanations.
Crude palm oil marketing analysis at PT. Socfin Indonesia (Socfindo)
Authors: Paramita M P , Nasution S K H , Fauzia L 
Published: April 2020

Abstract
In CPO marketing, the marketing efficiency process can determine the size of the costs and profits received by companies and institutions involved in the marketing process. This study aims to analyse the marketing process, marketing margin, marketing efficiency of Crude Palm Oil (CPO) at PT. Socfin Indonesia (Socfindo). The descriptive analysis by interviewing the Marketing Head officer at PT. Socfin Indonesia, marketing efficiency analysis (marketing margin), also price transmission elasticity analysis. The results indicated that the marketing system applied at PT. Socfin Indonesia is a Long-Term Contract system. The marketing system has been efficient.
Bottled coffee consumers’ preferences in Medan City
Authors: Salmiah  , Emalisa  , Sahir S H , Nurhanifa S 
Published: April 2020

Abstract
Producers need to understand consumers’ behaviour in purchasing bottled coffee products. Consumers’ consideration in buying bottled coffee is the basis for producers for marketing strategies. The purpose of this study was to analyse consumer’ preferences for decisions in buying bottled coffee. Bottled coffee in this study uses 6 attributes that is colour, flavour, packaging, price, thickness, and promotion. Analysed using conjoint analysis with SPSS 24 by giving questionnaires to 100 respondents, the results of this study indicate that the majority of consumers likes bottled coffee with black colour, fragrant flavour, unattractive packaging, with a price of more than 8,000 IDR, and has an ordinary thickness. Promotion seen by consumers from social media.
The marketing strategy for sugar palm (Arenga pinnata) by people around the protected forest aren HPHTI of Toba Pulp Lestari
Authors: Azhar I , Nasution Z , Delvian  , Agussabti  , Riswan  , Risnasari I , Sembiring M R , Sidabukke S 
Published: April 2020

Abstract
Sugar palm is a plant that produces various high economy value product. The superior products of sugar palm as a food and energy source, among others, are brown sugar, palm-suiker, fresh sap, kolang-kaling (a type of candied fruit made from palm sugar), and alcoholic beverages. The purpose of this study was to analyse the marketing strategies that can be adopted by the community who utilise sugar palm living around the area of PT. Toba Pulp Lestari. Analysis carried out in this study is analysis SWOT. The results of this study found that there are several strategies that have been made based on the SWOT analysis. One of them is creating farmer groups and cooperatives at the village level, providing market information to farmers, increasing road access, and developing farmer capacity building.
Price transmission of Arabica coffee between North Sumatra with state main export purpose (America-Europe)
Authors: Damanik Z , Rahmanta  , Ayu S F 
Published: April 2020

Abstract
Fluctuations in North Sumatra Arabica coffee prices can affect market efficiency and transmission prices of North Sumatra Arabica coffee with the main export destination countries. This can be used as an opportunity by market participants, especially those who have the power to influence prices to manipulate prices. This research was conducted to analyse the transmission price of North Sumatra Arabica coffee with the main destination countries of America and Europe, and analysis of the factors forming the price of Arabica coffee in North Sumatra. The method used in this study is the Asymmetric Error Correction Model (AECM) model which is used for analysis of Arabica coffee price transmission and the Error Correction Model (ECM) model which is used to analyse the factors forming coffee prices with. The results showed that there was an asymmetric relationship between the transmission price of Arabica coffee in North Sumatra and the main destination country in the short run whereas in the long run the price transmission occurred symmetrically. In the analysis of the factors forming the price of North Sumatra Arabica coffee both in the short term and long term are significantly affected by all variables used.
Analysis of farmer’s revenue and factors which affect carrot production in Surbakti Village
Authors: Silva Jr A A D , Supriana T 
Published: April 2020

Abstract
The purpose of this research is to calculate the level of income/revenue of carrot farmers in Surbakti Village, and analyse the factors of production which affect carrot production in Surbakti Village. The study population was carrot farmers in Surbakti Village, a sample of 82, the sampling method used is accidental sampling. The analytical method used in this study was the Cobbs-Douglas production function method. The results of the analysis showed that the independent variables (land area, fungicide and labour) had a significant effect on carrot production, while hydro complex and insecticide had no real effect. The income per farmer from carrot farming is IDR 28,871,664.02 or IDR 41,266,802.34 per hectare.
Analysis the factors affecting the women’s participation in economic activities of the fisherman households in coastal areas
Authors: Syahri L K , Iskandarini  , Wibowo R P 
Published: April 2020

Abstract
The role of women is one of the human resources that need to be economically empowered, in meeting daily needs. The purpose of this research to determine the shape of women’s participation and to analyse factors affecting women’s participation in economic activities of the fishermen’s households, especially in Medan Labuhan, Medan Marelan and Medan Belawan sub-districts. The determination of the area is done purposively. The sample’s large method of determination is determined by the formula Slovin, and the samples are randomly drawn (simple random sampling) and the technique of sample quantities from each research site or each sub-district is a proportional sampling. The methods of data analysis used are methods of descriptive analysis and regression logistic. The results showed that 40 people (41.24%) fishermen’s wife does work and 57 people (58.76%) The fisherman’s wife works from a total of 97 respondents and the estimated results show the factors that significantly affect women’s participation in the fishermen’s household economic activity are the number of family dependents and husband’s permission.
The utilization of cassava by-products into complete ration on performances and feed digestibility of weaning male crossbred Landrace pigs
Authors: Zendrato D P , Hasan F , Hanafi N D , Henuk Y L , Daulay A H 
Published: April 2020

Abstract
A study was conducted to determine the utilization of cassava by-products, especially leaves, peel and pulp included into a complete ration on the performances and digestibility boar crossbred Landrace pigs. 16 crossbred white Landrace piglets with an initial live weight of 20.40 (± 1.27) kg used in this study. A completely randomized design was used in which the 16 piglets were randomly allocated to four diets and four replicates. The four dietary treatments were used: T0 = positive control (commercial pig starter/grower added without dried cassava by-products); T20 = commercial pig starter/grower added with 20% dried cassava by-products; T40 = commercial pig starter/grower added with 40% dried cassava by-products; T60 = commercial pig starter/grower added with 60% dried cassava by-products. The best result of adding cassava byproducts in commercial starter/grower of pigs were at the level of 20% with FI of 1.547 kg/head/day, BWG of 0.296 kg/head/day, FCR of 5.22, DM digestibility of 77.72%, OM digestibility of 73.77%. It was concluded that cassava by-products derived from the making of cassava chips for human consumption can be included in pigs starter and grower diet up to 20%.
Organoleptic characteristics of broiler chicken meat using juice of starfruit (Averrhoa bilimbi L)
Authors: Hafid H , Patriani P , Nuraini  , Norma  , Ananda S H , Inderawati  
Published: April 2020

Abstract
The study aimed to determine the effect of using Averrhoa bilimbi L juice on the organoleptic characteristics of fresh chicken meat. The material used in this study is chicken meat and Averrhoa bilimbi L juice. The study used a completely randomized design with treatment without giving Averrhoa bilimbi L (P0) as a control, given juice and stored for 3 hours (P1), given juice and stored for 6 hours (P2), juiced and stored for 9 hours (P3). Testing of organoleptic characteristics using seven trained panellists from restaurant employees in Kendari. The results showed that the treatment of Averrhoa bilimbi L juice with different storage times had no significant effect (P> 0.05) on the organoleptic characteristics of aroma, colour, and tenderness of broiler chicken, but gave a significant effect (P <0.05) on taste and showed very significant influence (P <0.01) on the texture of chicken meat. Conclusions in this study were the best treatment for using Averrhoa bilimbi L juice for nine hours.
Management strategies for leading sectors of fisheries, livestock and agriculture resources in supporting the economic of border household in the border between Indonesia and Timor Leste
Authors: Paulus C A , Sobang Y U L , Azmanajaya E , Pellokila M R , Henuk Y L 
Published: April 2020

Abstract
The economic contribution in Belu Regency is dominated by fisheries, livestock and agriculture sectors. The purpose of this research is to find business contribution from the leading sectors of agriculture, livestock, and fisheries so as to provide economic benefits for the community, especially in the border area. The results of this study showed that the contribution and average percentage and income of each agricultural commodity was as follows: (1) corn (36%; IDR 3,365,500±567,948.52), (2) green beans (18%; IDR 1,725,250±481,375.43), (3) cashew nuts (16%; IDR 1,478,250±443,583.72), (4) sweet potato (13%; IDR 1,236,750±280948.93), (5) horticulture (9%; IDR 889,500±246,666.73), and (6) other plants (8%; IDR 774,075±157,144.7), repectively. The contribution and average percentage and income of each livestock commodity as follows: (1) beef cattle (56%; IDR 10,478,750±5,097,956.73), (2) pigs (33%; IDR 624,4250±2,016,287.81), (3) goats (4%; IDR 765,750±512,812.87), (4) native chicken (3%; IDR 618,500±362,077.70), (5) other livestock (3% and IDR557,000±310,107.79) respectively. The contribution and average percentage and income of each fishery business as follows: (1) capture fisheries (66%; IDR 9,988,750±1,373,826.65), (2) fish processing (18%; IDR 2,715,500±1,482,630.04), and (3) other fisheries services (17%; IDR 2,513,500±1,180,551.94), respectively. It can be concluded that the superior agriculture commodities in the Belu Regency, livestock commodities and fisheries business commodities.
The effect of bioctivator addition to the quality of bio gas slurry
Authors: Ginting N , Hasnudi  , Yunilas  
Published: April 2020

Abstract
The results of biomethanization process are biogas and slurry. The process of forming conventional biogas with cow feces input has a hydraulic retention time (HRT) of 30 days. In this study, an innovation was carried out by adding new bioactivator with the aim decomposition on input occur optimally and quickly. HRT of one week was showed good and stable gas production than controls. It is assumed that if the gas has stabilized, the slurry has undergone decomposition in which the slurry is a liquid fertilizer ready to use. The study design was a completely randomized design with three treatments as follows: (1) T1: control without an additional bioactivator; (2) T2: addition of biactivator 1%; and (3) T3: addition of bioactivator 2%. Bioactivator was made from waste bananas, papayas and pineapples with an additional of chicken intestines. Addition of chicken intestine was done because the bacteria in the chicken intestine are known very effective at work. The parameters measured were pH, C-Organic, N-Total, P2O5 and K2O. The results showed that T3 had characteristics as slurries which awee better than T2 or T1. This means that an additional of bioactivators cause good slurry quality even though HRT is only 1 week.
The effect of adding concentrated feed containing fermented banana corm meal fed to Bali cattle
Authors: Rosnah U S , Yunus M , Maranatha G , Sulistijo E D , Henuk Y L 
Published: April 2020

Abstract
The purpose of this study was to determine the effect of adding concentrated feed containing fermented banana corm meal included into Bali cattle rations fattening farmers’ patterns on their feed consumption, digestibility of dry matter and organic matter. This study used 12 Bali cattle with the age ranged from 1.5 - 2 years and their body weight of 105-120kg. The research method used was a completely randomized design with four treatments and three replicates. The four treatments were: T0 = basal feed breeder pattern + concentrate without fermented banana corm meal; T1 = basal feed breeder pattern + concentrate with 10% fermented banana corm meal; T2 = basal feed of breeder pattern + concentrate with fermented banana corm meal 20%; and T3 = basal feed of breeder pattern + concentrate with 30% fermented banana corm meal. The statistics analyses showed that the treatment had no significant effect (P> 0.05) on the consumption digestibility of DM and OM from Balinese cattle fattening farmers’ patterns. The conclusion was the addition of concentrated feed with fermented banana corm meal with different levels offering the same effect between treatments on feed consumption, digestibility of DM and OM from Bali cattle fattening farmers’ patterns.
The success strategy of forest community program in Pakpak Bharat District
Authors: Samsuri  , Permana J , Afifuddin Y 
Published: April 2020

Abstract
Community Forest (CF) is a state forest where the main use is to empower local community. There were 11 farmer groups in District of Pakpak Bharat that had submitted applications for CF programs. The research aimed: (1) to obtain the participation degree of forest farmer group (FFG) of CF program; (2) to determine development strategies of CF program. Analysed data used descriptive analysis, participation degree and strengthens weakness opportunity threatening (SWOT) method. The research shows that the degree of participation for dissemination and formation of forest farmer groups, monitoring and evaluation was high, meanwhile the degree of group participation in work planning and implementation of the CF program is moderate. The chosen strategy for the success of the CF program were (1) increasing the government role of Pakpak Bharat district; (2) planning for management of community forest areas is harmonized with the utilization of community forest areas for the development of timber and non-timber species; (3) implementation of local plant development programs; (4) village guidance by assistants both Field Extension Officers Local governments and Self-Extension Field Officers continue to be carried out.
Application of liquefied adhesive made of oil-palm stem for particleboard binder
Authors: Nuryawan A , Risnasari I , Situmorang D 
Published: April 2020

AbstractIn order to evaluate the quality of liquefied adhesive made of oil-palm stem, this research compared results of physical and mechanical testing of particleboard bonded by liquefied adhesive made of oil-palm stem (LA), urea-formaldehyde (UF) and isocyanate (IC), respectively. LA was produced in laboratory and for decreasing its viscosity; it was mixed with thinner prior to spraying. UF and IC were commercially type, represented interior and exterior application, respectively. Both applications were following the standard procedure. Results of this study showed quality of the physical and mechanical properties of the particleboard bonded by LA were in between particleboard bonded by UF and particleboard bonded by IC, for instance value of MOE (kgf/cm2) was 10594 (UF) < 23529 (LA) < 24413 (IC) and MOR (kgf/cm2) was 5.37 (UF) < 18.14 (LA) < 25.35 (IC). These results indicated that LA was a promising adhesive even though in this case it can be used for interior application only.
Changes in chemical components with NIR spectroscopy and durability of samama wood treated with boron, methyl methacrylate and heat treatment
Authors: Cahyono T D , Darmawan W , Yanti H , Iswanto A H 
Published: April 2020

Abstract
Wood quality modifications have the potential to degrade the wood’s chemical components, especially those using heat treatment. In fact, wood quality improvement should be identical with the durability improvement and the other specific purposes, such as fixation improvement of preservative materials. This research was aimed to examine changes in chemical components and durability of Samama wood gradually impregnated with boron, methyl methacrylate (MMA) and heat treatment (HT). Each of borax and boric acid was impregnated in pressure tank, continued with MMA impregnation. A 5-atm pressure is applied for 4 hours to both borax and MMA impregnations. The next stage is HT at 90°C and 180°C. The analysis on chemical components was conducted using NIR Spectroscopy and the durability was tested using drywood termites. The results showed that there were changes in lignin, cellulose and hemicellulose components of the wood, as indicated with clear differences in spectra between impregnated and non-impregnated woods. The most significant difference was found on wood impregnated with borax, MMA and HT at 180 °C. This tested sample evidently had the best durability among the tested samples.
Glycaemic index of instant porridge from parboiled rice flour and mocaf flour fortified with red spinach flour
Authors: Hanifa Z N , Lubis L M , Ginting S 
Published: April 2020

Abstract
This research was conducted to determine the glycaemic index value of instant porridge from parboiled rice flour and mocaf flour fortified with red spinach flour by using in vivo testing of rats. In vivo tests were given instant porridge orally with a concentration of porridge of 1.0126 g / 200 g rats BW. The instant porridge prepared from the best formulation, i.e. the ratio of parboiled rice flour of 70%: 30% mocaf flour with the addition of 2% red spinach flour. The glycaemic index value of instant porridge from parboiled rice flour and mocaf flour fortified with red spinach flour was 50.5091.