bluuebunny/crossref_metadata_2025 huggingface dataset:
Formation and structures of tyrocidine B oligomers in solution in the presence of water
Authors: Paradies Henrich H. , Reichelt Hendrik
Published: July 2020

Small-angle x-ray scattering and quasi-elastic light scattering measurements were conducted to analyze correlations between the structure and short-time dynamics of tyrocidine B·hydrochloride (TrcB) in ethanol, acetonitrile, and (R,S)-2-methylbutanol dispersions in the presence of 20.0% (v/v) water at 278 K and 298 K. The three TrcB dispersions exhibited peak position shifts that varied with the volume fraction. The experimental data were fitted to a model that considered the effective interaction potential, short-range attraction, and long-range repulsion. This model of repulsively interacting single TrcB particles is incompatible with the presence of equilibrium aggregate phases. The self-diffusion coefficient at the short-time limit (Dsh) decreased more as the TrcB concentration increased than one would expect for a corresponding hard-sphere or charged particle at the same volume fraction. At low volume fractions, the system consisted of monomers, dimers, and trimers. At high TrcB volume fractions, the main particles were larger aggregates. The collective diffusion coefficient, Dc, was constant when Q > Qc, where Qc is the position of the interference peak, which implies that there were no inter-monomer TrcB oligomer dynamics. This is because Dsh/D0 decayed much more quickly than the TrcB monomer as a function of the volume fraction. In vitro experiments revealed that antimicrobial activities were preserved at all volume fractions notwithstanding the presence of various oligomers.
High refractive nonlinearity of PdO films under femtosecond 800 nm laser pulses
Authors: Liakhovetskyi V. , Brodin A. , Rudenko V. , Brodyn M. , Styopkin V.
Published: July 2020

Nonlinear optical properties of thin polycrystalline PdO films are investigated using the Z-scan technique and a 800 nm 180 fs laser, whose wavelength is significantly longer than the absorption edge at 500 nm. Cubic nonlinear susceptibility Re χ(3) = +1.1 × 10−6 esu (n2 = 5.6 × 10−9 cm2/W) and nonlinear absorption coefficient β ≈ 5 × 10−5 cm/W are determined. The positive sign of Re χ(3) implies intraband carrier (predominantly holes) relaxation dynamics and the optical Kerr effect as underlying mechanisms. Relaxation time of refractive nonlinearity is estimated in the picosecond range. Linear absorption spectra in the interval of 1.5–6 eV, compared with the literature data, suggest that microcrystals in our films are predominantly oriented with the С axis orthogonal to the film.
Observation of near-infrared sub-Poissonian photon emission in hexagonal boron nitride at room temperature
Authors: Camphausen Robin , Marini Loris , Tawfik Sherif Abdulkader , Tran Toan Trong , Ford Michael J. , Palomba Stefano
Published: July 2020

The generation of non-classical light states in the near-infrared (NIR) is important for a number of photonic quantum technologies. Here, we report the first experimental observation of sub-Poissonian NIR (1.24 eV) light emission from defects in a 2D hexagonal boron nitride (hBN) sheet at room temperature. Photoluminescence statistics shows g(2)(0) = 0.6, which is a signature of the quantum nature of the emission. Density functional-theory calculations, at the level of the generalized gradient approximation, for the negatively charged nitrogen anti-site lattice defects are consistent with the observed emission energy. This work demonstrates that the defects in hBN could be a promising platform for single-photon generation in the NIR.
A computational study of spin Hall effect device based on 2D materials
Authors: Wu Tong , Guo Jing
Published: July 2020

Efficient spin-charge conversion is indispensable in spintronic computing and memory technologies for achieving low power. Spin Hall and quantum spin Hall effects have been demonstrated in certain atomically thin two-dimensional (2D) materials. In this work, we develop a multiscale simulation method from atomistic quantum transport simulation to the circuit model for the spin Hall effect (SHE) device based on 2D materials. Numerical implementation to speed up atomistic transport simulations with the non-equilibrium Green's function formalism is described for the crossbar SHE device. The multiscale method can treat atomistic scale features and compute the spintronic device performance metrics of the modeled device. As an example, the effect of edge roughness on the SHE devices based on monolayer 2D materials is investigated. The results illustrate that aggressively scaled monolayer SHE devices can efficiently transduce charge to spin in the presence of edge roughness.
Shared up-regulation and contrasting down-regulation of gene expression distinguish desiccation-tolerant from intolerant green algae
Authors: Peredo Elena L. , Cardon Zoe G.
Published: July 2020

Significance

The well-established up-regulation of genes coding for protective proteins during drying of desiccation-tolerant taxa has been central to previous efforts to understand (and manipulate) desiccation tolerance. Using comparative transcriptomics in closely related desiccation-tolerant (desert-derived) and intolerant (aquatic) green algae in the family Scenedesmaceae, here we show, however, that both desiccation-tolerant and intolerant algae up-regulated expression of common protective genes during desiccation. The feature distinguishing desert green algae from their aquatic relative was an extensive, controlled down-regulation of gene expression associated with diverse growth and energy-acquiring metabolic pathways during desiccation. These data suggest a new perspective on desiccation tolerance may be warranted, recognizing both up-regulation of genes coding for protective proteins and extensive down-regulation of diverse metabolic genes.
Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces
Authors: Pingali Sai Venkatesh , Smith Micholas Dean , Liu Shih-Hsien , Rawal Takat B. , Pu Yunqiao , Shah Riddhi , Evans Barbara R. , Urban Volker S. , Davison Brian H. , Cai Charles M. , Ragauskas Arthur J. , O’Neill Hugh M. , Smith Jeremy C. , Petridis Loukas
Published: July 2020

Significance

The use of plant biomass for the production of fuels and chemicals is of critical economic and environmental importance, but has posed a formidable challenge, due to the recalcitrance of biomass to deconstruction. We report direct experimental and computational evidence of a simple physical chemical principle that explains the success of mixing an organic cosolvent, tetrahydrofuran, with water to overcome this recalcitrance. The hydrophilic and hydrophobic biomass surfaces are solvated by single-component nanoclusters of complementary polarity. This principle can serve as a guide for designing even more effective technologies for solubilizing and fractionating biomass. The results further highlight the role of nanoscale fluctuations of molecular solvents in driving changes in the structure of the solutes.
Forgoing earned incentives to signal pure motives
Authors: Kirgios Erika L. , Chang Edward H. , Levine Emma E. , Milkman Katherine L. , Kessler Judd B.
Published: July 2020

Significance

Financial incentives can spark behavior change but often damage recipients’ self-image. We designed and tested an intervention that allows organizations and individuals to resolve this tension. We motivated actors with financial rewards and then gave them the opportunity to forgo those rewards to signal their past actions were intrinsically motivated. We propose that actors who forgo financial rewards engage in “motivation laundering,” passing up payments earned for an incentivized action to retroactively signal that their motivations were intrinsic. Our intervention has the potential to leave organizations and incentivized individuals better off: Financial rewards help actors build better habits, and motivation laundering allows them to boost their self-image, while giving organizations opportunities to lower incentive program costs.
Lineage reconstruction from clonal correlations
Authors: Weinreb Caleb , Klein Allon M.
Published: July 2020

Significance

Animals begin life as a single cell that divides and differentiates to form a complex body. In doing so, cells make a sequence of fate decisions, often depicted as a tree. A goal in developmental biology is to chart the structure of this tree across tissues, typically by tagging cells and tracking their offspring. Recent advances in DNA sequencing enable tracking thousands of cells simultaneously using unique DNA barcodes, but one can construct false differentiation hierarchies from barcode data. Here, we apply the theory of branching processes to derive conditions under which barcode statistics correctly encode developmental hierarchy. We use this formal basis to develop a practical pipeline for analyzing lineage barcoding experiments. The pipeline is demonstrated in studying hematopoiesis.
Individual differences determine the strength of ecological interactions
Authors: Griffiths Jason I. , Childs Dylan Z. , Bassar Ronald D. , Coulson Tim , Reznick David N. , Rees Mark
Published: July 2020

Significance

Demonstrating asymmetric competition in natural systems is difficult, as the effect of large individuals on small ones has to be measured, and vice versa. Numerous experiments have quantified one side of the interaction, typically the effect of large individuals on small ones. Here, we demonstrate, using a long-term study of guppies, that an individual’s performance depends on its relative size, with large individuals being competitively dominant. Accurate prediction of both the mean and variance in body size was possible by using models incorporating asymmetric competition, whereas in models where individuals are competitively equivalent, the predictions were poor.
Translation information processing is regulated by protein kinase C-dependent mechanism in Purkinje cells in murine posterior vermis
Authors: Hernández Rosendo G. , De Zeeuw Chris I. , Zhang Ruyan , Yakusheva Tatyana A. , Blazquez Pablo M.
Published: July 2020

Significance

For spatial navigation, self-centered information sensed by sensory organs is transformed into word-centered information about our motion and orientation in space. The cerebellar posterior vermis helps transform vestibular afferent cues into translation and tilt information, but empirical evidence on the neuronal computations involved is lacking. We investigate these computations using a modeling approach and transgenic mice where protein kinase C (PKC) is inhibited at cerebellar cortex output neurons (Purkinje cells [PCs]). We demonstrate that most PCs have tilt and translation information and that the gain and timing of translation information are modulated by PKC-dependent processes. Hence, translation and tilt information are independently regulated in PCs. Moreover, PKC-dependent processes at PCs participate in generating world-centered motion information.
Default-mode network streams for coupling to language and control systems
Authors: Gordon Evan M. , Laumann Timothy O. , Marek Scott , Raut Ryan V. , Gratton Caterina , Newbold Dillan J. , Greene Deanna J. , Coalson Rebecca S. , Snyder Abraham Z. , Schlaggar Bradley L. , Petersen Steven E. , Dosenbach Nico U. F. , Nelson Steven M.
Published: July 2020

Significance

The human brain is organized into large networks. One important brain network is the Default network, which enables cognitive functions such as social thinking, memory, and reward. In group-averaged data, this network emerges as a unitary whole, despite its involvement in multiple cognitive functions. Here, we tested whether Default networks found in individual humans, rather than group-average networks, contain organized substructure. In individuals, we consistently found nine subnetworks within the Default network. These subnetworks matched brain activity patterns during cognitive tasks. Some subnetworks resembled brain circuits involved in specific Default functions. Others linked Default network to other large networks. In summary, this study describes a set of brain circuits within the Default networks of individual humans.
Feasibility of Auricular Acupressure as an Adjunct Treatment for Neonatal Opioid Withdrawal Syndrome (NOWS)
Authors: Jackson Heather J. , Lopez Cristina , Miller Sarah , Englehardt Barbara
Published: July 2020

Background

The opioid epidemic in the United States continues to threaten public health. As a result of this crisis, neonatal opioid withdrawal syndrome (NOWS) has risen exponentially and requires a multitude of non-pharmacologic treatments to ensure healthy neonatal outcomes.

Methods

This feasibility study implemented an acupressure protocol as informed by the Near-Term Infant (NTI) conceptual framework for the treatment of NOWS. Aims of this study were to assess provider training, effective integration of acupressure within the standard of care, and acceptance of this treatment by mothers and healthcare providers.

Results

With maternal consent, a total of 12 participants were enrolled and underwent auricular acupressure. Nurse Practitioners were credentialed (75%) and effectively administered neonatal acupressure (100%) in accordance with the study protocol. Mothers were very satisfied with acupressure for the treatment of NOWS (Client Satisfaction Questionaire-8 mean scores 3.8–4.0 of a possible 4.0), and the majority of healthcare providers were supportive (66%, mean scores 3.6 to 4.0 out of possible 5).

Conclusions

Auricular acupressure was successfully implemented within the standard of care for NOWS. Future studies should incorporate outlined suggestions and include qualitative measures of acceptance as well as randomized controlled trials to evaluate efficacy.
Serum ferritin and vitamin D evaluation in response to high altitude comparing Italians trekkers vs Nepalese porters
Authors: Magliulo Laura , Bondi Danilo , Pietrangelo Tiziana , Fulle Stefania , Piccinelli Raffaela , Jandova Tereza , Blasio Gaetano Di , Taraborrelli Mattia , Verratti Vittore
Published: July 2020

Altitude hypoxia induces changes in iron homeostasis with serum ferritin (sFER) response being recently linked to erythropoiesis. The main aim of this study was to investigate sFER and Vitamin D (Vit D) response to hypobaric hypoxia, taking into account factors including nutrition and ethnic origin. As part of a “Kanchenjunga Exploration & Physiology” project, 6 Italian trekkers and 6 Nepalese porters took part in a 19‐days long altitude trek in the Himalayas self‐recording daily food consumption. Blood samples were collected and analyzed before and after the trek for sFER and Vit D. A web‐based system calculated the dietary intake, generating reports that were used for later statistical analyses. sFER decreased after the trek (on average by 26% p = 0.013, partial η2 = 0.479) in both groups, whereas Vit D did not change in both groups. Nepalese tended to have lower sFER, but this difference was reduced when corrected for the dietary intake. Mean Cell Volume (MCV) and Hematocrit (HCT), in respect to baseline, remained higher 10 days after the trek (respectively, 87.37–88.85 fL with p = 0.044, and 43.05–44.63% with p = 0.065) in Italian trekkers. The observed reduction of sFER levels was related to altitude per se as inflammation or anemia were medically excluded. sFER, therefore, may act as a primary factor in the examination of hypobaric hypoxia in field studies. The results of this study open a new door into the mechanisms of iron homeostasis in specific tissues related to hypoxia adaptations, taking into account dietary intake and ethnic origin.
Does the initial level of horizontal force determine the magnitude of improvement in acceleration performance in rugby?
Authors: Escobar Álvarez Juan Antonio , Jiménez‐Reyes Pedro , da Conceição Filipe Almeida , Fuentes García Juan Pedro
Published: July 2020

This study aimed to observe the effect of 8 weeks of resisted sled training (RST), with optimal loading for maximal power output production and initial levels of force, on the magnitude of improvement in sprint performance and individual sprint mechanical outputs in female amateur rugby union players. The study examined the horizontal Power‐Force‐Velocity profile (P‐F‐V profile), which provides a measure of the athlete's individual balance between force and velocity capabilities (Sfv), theoretical maximum force (F0), theoretical maximum velocity (V0), maximum power (Pmax), the maximum ratio of force (Rfmax) and rate of decrease in ratio of force (Drf). Thirty‐one participants (age = 23.7 ± 3.3years, BM = 69 ± 9Kg, height = 167.5 ± 5.2 cm) were divided into a control group and two experimental groups; forwards (FG) and backs (BG). For 8 consecutive weeks (16 sessions), all groups performed the same training programme: 2 sets of 5 × 30 m, but athletes assigned to FG and BG ran towing a resisted sled attached to their waists, with optimal loading for maximal power output production. Both FG and BG significantly improved (p ≤ 0.05) in 5 and 20 m sprint performance, and in the mechanical properties related to the horizontal P‐F‐V profile. The correlation between the initial level of horizontal strength and the magnitude of improvement in Pmax also suggests that higher levels of horizontal force may lead to greater adaptations in RST. The P‐F‐V profile is a useful field method for identifying the weakest mechanical variable in rugby players during sprinting and enabling the prescription of individualized training programmes according to specific running performance.
Expressing Newton’s second law of motion as
Fnet = 2ma and kinetic
energy as KE = mv
2
Authors: Pili Unofre B
Published: July 2020

Newton’s second law of motion is written as
F

net
=
2ma, while the rectilinear kinetic energy of a particle is
written as KE = mv
2
. When this
formalism is applied to a number of standard exercise problems, anticipated
solutions are obtained. This article details what is perceived as
instructionally useful—in teaching students who are non-physics majors in
particular—in illustrating that the factor 1 in the product of mass and
acceleration for Newton’s second law of motion, and the factor 1/2 in the
product of mass and square of its speed for kinetic energy are factors not to be
construed as fundamental physical constants.
Kadomtsev-Petviashvili equation for magnetosonic waves in Hall plasmas and soliton stability
Authors: Ruderman M S
Published: July 2020

In this article we study nonlinear waves in Hall plasmas. We consider magnetosonic waves propagating at the angles with respect to the equilibrium magnetic field that are not close to either 0 or π/2. Using the reductive perturbation method we derive the three-dimensional Kadomtsev-Petviashvili (KP) equation. We use the KP equation to show that both fast and slow magnetosonic solitons are unstable with respect to transverse perturbations. We confront our results with the investigation of soliton stability in anisotropic media using the study of soliton self-refraction.
Effective Consumption of Garlic (Allium Sativum Linn) on Decreasing Blood Cholesterol Levels
Authors: Maisaroh Siti , Zahro Chilyatiz , Puspitosari Dewi Retno , Wahdi Achmad , Pratiwi Tiara Fatma
Published: July 2020

Many people in Babat Jerawat village suffer from cholesterol disease. The treatment carried out by the community in Babat Jerawat village is more familiar with medical treatment than herbal medicine. This study aims to analyze the effect of consumption of garlic (Allium sativum linn) on reducing cholesterol levels in blood in hypercholesterolemia patients in Babat Jerawat village, Benowo Surabaya. This study uses a Pre Experimental design, with a population of 20 people, a sample of 14 people. Independent variable is garlic which is consumed raw with a dose of @ ± 4gram (2×1 a day), the dependent variable is a decrease in cholesterol levels in the blood. The sampling technique used is Purposive sampling. The results of this study indicate that of the 14 respondents, all experienced a decrease in cholesterol levels in the blood after consuming garlic @ ± 4gram (2×1 a day). Results that can be used using the Wilcoxon Signed Ranks Test are ρ <α (0.001 <0.05). There is an effect of garlic consumption because there is a significant decrease in cholesterol levels in the blood. Nurses can recommend the preparation of consumption of garlic which has been dried @ ± 4gram (2×1 a day) as a complementary therapy in patients with hypercholesterolemia. It is expected that further research can better control the behavior and lifestyle of respondents.
The Growth of Moringa Seedling Originated from Various Sizes of Stem Cutting
Authors: Santoso Bambang Budi , Arya Parwata IGM
Published: July 2020

The ddevelopment of an efficient technique for vegetative propagation would be a benefit for the nursery industry for the production of some clones with desirable characters. This study was conducted to develop a vegetative propagation protocol of Moringa oleifera using some different sizes of cutting started from April to July 2017. The factorial experiment was used, in which the first factor was stem cutting length (25cm, 50 cm, and 75 cm), and the second one was stem cutting diameter (3.0-4.0 cm, 4.1-5.0 cm, and 5.1-6.0 cm). This experiment was designed using Completely Randomized Design with five replications, and each replication contained10 seedlings. The results show that the seedling growth was affected by stem cut diameter and length alone during three months nursery period. To produce more valuable seedlings, the vegetative propagation using stem cutting ranging should use 50-75 cm in length and/or 3.0-6.0 cm in diameter.
Building Environmental Legal Culture in Mining Activities in Belitung Timur
Authors: Haryadi Dwi , Darwance  , Saputra Putra Pratama
Published: July 2020

The principle of mining that is environmentally sound has in reality not been fully implemented properly in Belitung Timur Regency. Data and facts indicate that the reclamation obligation is not optimal by holders of Mining Business Permits (MBP), especially illegal mining activities that massively damage the environment and the absence of reclamation and post-mining efforts. people’s mine. Based on the above problems, this paper focuses on how to build a legal culture environment for mining communities in Belitung Timur. This research is a qualitative study with primary data and secondary data. Data collection techniques through literature and Focus Group Discussions with related stakeholders, as well as observations to mining sites. The study of legal awareness in the management and protection of the environment becomes interesting when faced with mining activities that are seen as not environmentally friendly, but always carry the mission of sustainable and environmentally sound development.
Law Enforcement of Environmental Pollution and Damage
Authors: Hendriana Rani , Utami Nurani Ajeng Tri , Angkasa
Published: July 2020

Each year, environmental pollution and damage is always increasing and tends to be out of control. The use of administrative and civil sanctions is considered ineffective, however to implement criminal sanctions is still difficult. Therefore, the purpose of this study is to analyze the regulation of criminal offense in Law No. 32 of 2009, factors that influence the enforcement of environmental crime, and the projection of enforcement of environmental crime in the Criminal Code Bill. The research showed that in Law no. 32 of 2009 some offense formulated as material offenses and some others constituted formal offenses, some provisions were formulated in ultimum remedium, and a small part in primum remedium. There are factors that influence law enforcement of environmental crime which actually becomes a weakening factor in terms of legal structure, legal subtance and legal structure. However, the legal substance of the Criminal Code Bill may weaken enforcement of environmental criminal law in the future.
The Potential of Solar Panel Implementation Towards Sustainable Affordable Housing Development
Authors: Lucianto Andrean Eka , Herdiansyah Herdis
Published: July 2020

Affordable housing is often associated with low-cost housing that pays lack of attention to the principle of sustainable housing. It is due to having limited price which meet the decree of Minister of Public Works and Public Housing No.552/KPTS/M/2016. However, the application of solar panels in the affordable housing has potential of cost efficiency by replacing the cost of monthly electricity payment with the initial investment and maintenance cost of a solar panel network in the housing. The potential of electricity power in Parung Panjang housing is calculated by applying spatial analysis using GIS. Parung Panjang housing has the total area of 214,1 hectares. The results of spatial analysis showed that the potential of roofs that can be used for solar panel installation is 44,6 hectares. By managing that area and electricity payments, the potential for solar cost of energy is 929.14 IDR/kWh. It is lower than the cost of energy from State Electricity Company of 1,352 IDR/kWh. Besides, the implementation of solar energy in large residential area is more efficient than in a single house and small area.
Strategy of Improving the Farmers’ Adoption to Temanggung Robusta Coffee’s Geographical Indication Standard
Authors: Ihsaniyati Hanifah , Setyowati Nuning , Pardono
Published: July 2020

Temanggung Regency is a main producer of coffee in Central Java Province of Indonesia. Temanggung coffee has unique taste, as it is indicated with geographical factor. Previous studies showed the farmers’ low adoption to Temanggung Robusta Coffee’s GI standard. It made their coffee product not having added-value and incapable of competing in the market with good price. For that reason, this research aimed to formulate the strategy of improving the farmers’ adoption to Temanggung Robusta coffee’s GI standard. Data was collected through in-depth interview, observation, document study, and discussion. Thirty informants were employed in this study, coming from related office, facilitator, coffee seller, coffee maker, MPIG-KRT administrator, farmer group, consumer, and farmers. Data analysis was conducted using IFE-EFE matrix, SWOT analysis, and QSP Matrix.
Influence of attack intensity of Sucking Pod (RiptorusLinearis), to the Yield of Superior Soybean Varieties in Drought Stress Condition
Authors: Sarjan Muhammad
Published: July 2020

The objective of this investigation is to determine the influence of attack intensity of pod sucking pest, to the yield of superior varieties of soybean in drought stress conditions. The researchhas been carried out in the greenhouse of the Faculty of Agriculture, University of Mataram. Experiments have been designed by using completely randomized design with treatment consist of eight soybean varieties namely Anjasmoro, Panderman, Burangrang, Lawit, Argomulyo, Kaba, Tanggamus and Grobogan. The parameters measured were: 1) starting time of flowering age, 2) Attack intensity3) plant resistance; 4) plant height; 5) number of pods; 6) number of seeded pods; 7) number of empty pods because of pests; 8) the number of empty pods because of drying; 9) the number of seeds per plant; 10) weight of 100 seeds; 11) and grain yield per plant; 12) water needs. Data analysis of the studies were performed using ANOVA on the significance level of 5 percent, continued by Honestly Significant Difference (HSD) 5%. The results showed that 1) the decrease of weight 100 seeds of each varieties are proportional to the intensity of pest attacks Riptortuslinearis. Burangrang (moderate resistance), the intensity of attack is 22.35%, the decrease of product is 27% followed by Anjasmoro (moderate resistance), the intensity of the attacks 29.07%, the decreased of product is 31.01%; Grobogan (moderate susceptible), the intensity of attack is 37.88%, the decreased of product is 35.71 %; Argomulyo (moderate susceptible), the intensity of attack is 38,32%, the decrease of product is 40,98 % Panderman (very susceptible), the intensity of the attacks 72,87%, the decreased of product is 60,02%; Kaba (very susceptible), the intensity of attack is 85,77%, the decreased of product is 64,92 %; Tanggamus (very susceptible), the intensity of attack is 86,87%, the decrease of product is 67,40 %, and Lawit (very susceptible), the intensity of attack is 89,41%, the decrease of product is 68,03 %. 2) Varieties with a higher level of resistance and produced the highest weight of 100 seeds. Varieties with a higher level of resistance and produced the highest weight of 100 seeds is Burangrang 7.57 g followed by Anjasmoro 6.23 g; Grobogan 6.04 g; Argomulyo 5.76 g; Panderman 4.39 g; Kaba 2.14 g; Tanggamus 2.08 g and Lawit 1.95 g.
Modification of Process and Formulations Technology To The Characteristics of Hanjeli Gluten Free Noodles
Authors: Herawati Heny , Kamsiati Elmi , Bachtiar Muchamad
Published: July 2020

Noodle production technology using non-wheat flour or gluten free raw materials has begun to be widely researched and developed in Indonesia. One opportunity to improve local food throughout the implementation of gluten free noodle processing technology with the main raw based material by hanjeli flour. Hanjeli is Indonesia’s local food which has advantages including having high protein content. This study aims to modify the process technology and formulation of the characteristics of gluten free hanjeli noodles produced. The stages of this research method are in the form of preliminary research, where an analysis of the effect of the steaming time on the characteristics of the resulting hanjeli noodles is analyzed. In the initial stage, a research method is carried out using savings in the form of quality and is expressed in the form of descriptive results. Whereas in the next stage the study was carried out using a completely randomized design and analyzed its physical and chemical characteristics. The data obtained was then analyzed using SPSS 2.1. Based on the analysis results obtained the highest yield of 92% in the form of formula (1) hanjeli flour by 95% and tapioca 5%, addition of water 50% dry material base and steaming time for 20 minutes and formula (2) with modifications using 75% hanjeli flour and tapioca 25%.
Estimation of Oil Recovery for Hydrocarbon Injection EOR Method using a Newly-Developed Predictive Model
Authors: Merdeka M G , Syihab Z , Rahmawati S D , Gaol A H L , Yasutra A , Setiawan M B , Metra F , Winata D T , Sitompul V , Aziz M C , Buhari A
Published: July 2020

Application of predictive model in enhanced oil recovery has been mainly to obtain an estimate of production performance. The advantage of a predictive model over reservoir simulation are the computational speed and its significantly lower cost. A predictive model is able to provide results instantly, comparing to the whole process of reservoir simulation. However, it should be noted that predictive model is not a substitute for reservoir simulation, but rather as a starting approach for field development planning purposes. Hydrocarbon injection is an EOR method which incorporates the injection of hydrocarbon gas to increase oil production. Presently, there has been little to none predictive models developed to estimate oil production for hydrocarbon injection method. In this study, a predictive model of the hydrocarbon injection method is presented. The predictive model was developed using commercial software CMG. Based on an inverted 5-spot reservoir model, thousands of reservoir simulation cases with different parameter values were conducted as a sensitivity analysis. Cumulative oil production result was captured from each simulation case to build the predictive model. Polynomial regression and neural network predictive models were built. The neural network model fitted the simulation data better than the regression model. R-square value for both predictive models exceeded 90%. This predictive model can be confidently used to estimate cumulative oil production as long as the input parameter values are within the parameter intervals of the model.
Effects of land use on sedimentation rates at Cimanuk watershed, West Java
Authors: Munfarida I , Munir M , Rezagama A
Published: July 2020

Watersheds can be seen as natural systems where hydrological and biophysical processes take place as well as complex socio-economic activities of the community. As an integrated water system, watershed is influenced by the upstream conditions and the biophysical conditions of catchment areas areas which in many places are vulnerable to the threat of human disturbance. Hence, this study was aimed at assessing the patterns of land use on sedimentation rates at Cimanuk watershed, West Java. We calculated the sediment concentration, river debit and prediction of sedimentation rates based on regulation of the Minister of Forestry No. P. 61/Menhut-II/2014. The study revealed that land use effect the sedimentation rates from agriculture, forestry, rice fields, settlement, sauce and soy sauce factory, and leather factory with the sedimentation rates are 2,86 ton/day; 58,73 ton/day; 33,64 ton/day; 33,80 ton/day; 78,85 ton/day and 56.83 ton/day respectively. We concluded that Cimanuk watershed is characterized by deterioration with mismanagement of natural resources. Unmanaged of land use were affecting the hydrology of the Cimanuk watershed. Control potentials of watershed sedimentation include management of land use, optimization of water resources and reducing sediment load from its surrounding area.
Soil deformation analysis by using plaxis 2D that cause by vibration of pilling hammer
Authors: Syarif F , Kurniawan M , Elizar
Published: July 2020

Highway road construction in Section 5 in the Pekanbaru-Dumai will be built a bridge. The construction of the bridge is in the area of PT TGI gas pipeline. The construction of this bridge uses a pile foundation whose pile is carried out using a beating method using a hammer. The diameter of this pile is 60 cm with a hammer weight of 5 tons and a height of fall of 2.5 meters. This work method will produce vibrations that affect the condition of the gas pipe. One of the aspects that are affected by vibration is the deformation of the soil around the gas pipe. This soil deformation will affect the position of the gas pipe which, if it forms a fairly large slope, may cause gas pipelines to crack. One of the analysis to predict the soil deformation around the pipeline is by using Software Plaxis 2D. from Plaxis 2D soil deformation of the soil can be predicted and made a suggestion to reduce the soil deformation.
Simulation model for risk analysis of construction progress of water resources and hydropower projects
Authors: Yongrong Qin
Published: July 2020

There are many uncertainties in the construction process of water conservancy and hydropower projects. The risk analysis of project completion should consider the constraints and overlaps of various resource allocations and procedures. A fault tree risk analysis method is used to comprehensively evaluate the risks of various factors affecting the construction progress of the project. A large-scale water conservancy project construction schedule risk estimation model is solved using an appropriate method, which improves the calculation and application of schedule risk estimation, proposes control concepts of baseline schedule risk and revised schedule risk, and is verified using engineering examples.
Vibration control analysis of active tuned mass damper for large span buildings under simple spectrum excitation
Authors: Xie Yi
Published: July 2020

Aiming at the defect that the traditional damper has little anti-vibration control effect, an active frequency-modulated mass damper anti-vibration control method for large-span buildings under simple spectrum excitation was proposed. The anti-vibration matrix of active Tuned mass damper was established, the vibration vector displacement was calculated, the matrix transformation expression was designed, the vibration response value was calculated, the effect of vibration response on anti-vibration displacement was analyzed, then the stability and coordination control of active tuned mass damper were realized. A comparative experiment was presented to verify that the proposed method could increase the amplitude of anti-vibration control of the damper in the application.
Fuzzy Comprehensive Evaluation of Subway Shield Construction Risk Based on WSR and Combined Weighting
Authors: Zhao Jinxian , Sun Fei , Meng Wei
Published: July 2020

Aiming at the problem of risk evaluation of subway shield construction, a fuzzy comprehensive evaluation method based on WSR and combined weighting is proposed. Firstly, using the WSR methodology to analyze and select the risk indicators of the subway shield system from the three dimensions of “Wuli - Shili - Renli”, a risk assessment index system for subway shield construction was constructed. Then, fuzzy theory is introduced to establish a comprehensive evaluation model of subway shield construction based on combined weighting. Through the multiplication synthesis method, the weight values of the analytic hierarchy process and the entropy weight method are combined, and the principle of fuzzy relation synthesis is used to comprehensively evaluate the membership level. In the end, the shield tunnel in Qingdao Metro Line X is used as an example to calculate and demonstrate. The results show that the risk is at the “general” level, which is basically consistent with the actual situation. It shows the feasibility and applicability of the established evaluation method, which has guiding significance for reducing the risk of subway shield construction.
Estimation and Analysis of Water Environment Capacity: A Case Study of Huaxi Watershed in Guizhou Province
Authors: Dong Haiyang , Chong Lin , Guo Cong
Published: July 2020

A one-dimensional water quality mathematical model was put forward to calculate the water environmental carrying capacity(WECC) for rivers in Huaxi District. The river system of Huaxi district is divided into four basins. Based on field observation and numerical simulation, the pollutant degradation coefficients and diffusion coefficient for different river districts were determined to explore the WECCs of COD, NH3-N and TP. It reflects the pollutant carrying capacity of different basins under the hydrological condition of 90% guarantee rate, which plays an important role in pollution control and water environmental protection.
Seismic damage analysis of RC frames based on La Borderie model
Authors: Li Zheng , Ren Qingying
Published: July 2020

The refined uniaxial La Borderie damage model for concrete is implemented into general-purpose FEA software ABAQUS through the user material subroutine VUMAT. Then, in the platform ABAQUS, the seismic damage analysis of a reinforced concrete (RC) multi-story frame structure is conducted by using the damage model for concrete. The results indicate that the simulation method adopted in the present study can capture the damage and failure process of the RC frame structures. It is effective to identify the weak positions of RC frame structures under earthquake loading.
Stability analysis of gravity quay with an application of furrowed crushed-stone subgrades
Authors: Li Jingshuang
Published: July 2020

A new type of furrowed crushed-stone cushion is introduced for a caisson-structured quay. Numerical analysis was conducted to examine the stability, stress and sliding differences between quay models with furrowed and fully-paved crushed-stone cushion. The numerical analysis results show the difference between the safety factors is minimal. The stress states of two cushion structures are basically the same. The same sliding is found for both cushion structures. It is concluded that the subgrade with furrowed crushed-stone cushion will not adversely affect the stability of caisson-structured quay.
Production and Construction Technology of the Prefabricated Cascade-Style Special-Shaped Washroom Caisson
Authors: Baoquan Yin , Xiaoyan Wang , Yong Wu
Published: July 2020

Technical research was performed on the production and construction of the fully fabricated cascade-style special-shaped washroom caisson. The BIM technology was used to design the structure of cascade style special-shaped caisson, the arrangement of reinforcing steels, the embedded pipelines and so on. It is a favorable manual to instruct the intelligent production of prefabricated special-shaped washroom caissons. In this thesis, a kind of highly impermeable and cost-saving concrete was developed. It can greatly improve the impermeability of the structural parts. The molding technique of PE film rough surface in conical groove was also developed to improve the molding effect of rough surfaces on the side of structural parts. The researched production and construction technology for prefabricated cascade style special-shaped washroom caisson had been applied in a number of assembly construction projects. It guaranteed the quality and efficiency of prefabricated special-shaped caisson, and thus creating distinct economic and social benefits.
Research Status of Mechanical Properties of Metal-faced Sandwich Panels for Building Construction
Authors: Yigang Li , Zhen Yang , Xiang Li , Weibo Zhao , Haitao Liu
Published: July 2020

This paper describes the classification and mechanical characteristics of metal-faced sandwich panels for construction, the research methods of mechanical properties of metal-faced sandwich panels, and the research status of bending bearing capacity, wind load resistance and impact resistance of metal-faced sandwich panels. It can be seen from this that the research on mechanical properties of metal-faced sandwich panels has been relatively mature at present. In order to make the metal-faced sandwich panel more widely used, further research is needed on the incomplete bonding between layers and the mechanical properties of the metal-faced sandwich panel under special circumstances such as fire and low temperature.
Solving vibration characteristics of the space straight bridge based on the auxiliary system transfer matrix method
Authors: Yang Fan , Feng Tao
Published: July 2020

The transfer relationship between two ends of the bar was studied by using an auxiliary system with one end fixed and the other free. This transfer matrix method was the transfer matrix method of the auxiliary system. The method has high accuracy and was easy to calculate. In this paper, the vibration transfer matrix of spatial linear beam was derived based on discrete model and transfer matrix method of auxiliary system. Taking a span simply supported beam bridge as an example, the program was applied to calculate the natural vibration frequency and mode of spatial linear bridge. It demonstrates that this method was effective.
Analysis of bearing capacity of the six-sided plate pavement structure considering connection
Authors: Yu Jiahao , Zhao Jiaxin , Jin Tongyu , Zhang Sensen , Yang Yuanyuan
Published: July 2020

In order to study the bearing capacity of the six-sided plate pavement structure considering the connection relationship between six-sided plates, a finite element model of the six-sided plate pavement was established in ABAQUS software. Based on the ABAQUS finite element model, we focused on the influence of the thickness of the six-sided plate and the length of the connecting hooks on the carrying capacity of the six-sided plate pavement. By using the control variable method for simulation and analysis, the calculated results are reasonable, indicating that these two factors have a certain effect on the bearing capacity of the six-sided plate pavement structure.
Spawning flow velocity demand for representative fish species in the upper Yangtze River
Authors: Xu Lisi , Yin Zhengjie
Published: July 2020

To mitigate possible negative impacts of cascade dams on spawning of rare and endemic fish species in the national nature reserve downstream of these dams, spawning flow velocity demand for fish need to be considered in the cascade dams operation. Based on the cascade dams constructed in the upper Yangtze River, Coreius Heterodon was selected as the representative fish species. According to the drifting distance of fish eggs, the flow velocity characteristics at the spawning location of Coreius Heterodon were analysed with the unsteady flow mathematical model. The results show that a large flow velocity increase process is good for Coreius Heterodon spawning, and the process of velocity fluctuation is similar before spawning. The cumulative velocity amplitude, the cumulative number of fluctuations and the maximum velocity amplitude are closely correlation with the spawning number. The velocity in spawning period is affected by the dams operation, and the suitable range of velocity is changed from [0.8m/s, 1.2m/s] to [1.1m/s, 1.4m/s]. The results can provide the basis for future ecological operation based on flow velocity index of the cascade dams.
Research of The People and Livestock Drinking Water Technology with Wind and Solar Energy Mutual-complementing Power
Authors: Zhu Junfeng , Wang Xingtian , Liu Yuewen
Published: July 2020

There is a shortage of conventional energy in pastoral areas, especially due to the limitations of the power grid. But there are abundant renewable energy reserves. The northern remote pastoral areas are rich in wind energy and solar energy resources which has become the main method to solve the safety problem of drinking water in pastoral and rural areas. But the instability of wind and solar energy, and one single power can’t meet the needs of the pastoral area water supply well, so high reliability water supply mode with wind and solar energy mutual-complementing power in pastoral areas has been proposed.
Influence of nuclear island on seismic acceleration response on soft rock sites
Authors: Li Furong , Zhao Kai , Chen Guoxing
Published: July 2020

As the site resources of nuclear power plant are getting increasingly scarce day by day, soft rock sites will be gradually used for nuclear power plant construction. In this paper, a three-dimensional finite element model for the nuclear island structure on soft rock site (based on the horizontal layered soft rock site) was established using the ABAQUS finite element software by adopting the modified Davidenkov constitutive model with configuration of viscoelastic artificial boundary and consideration of the embedding effect. This model was used to simulate the nonlinear characteristics of the soft rock site and comparatively analyse the influence of the nuclear island on the seismic acceleration response of soft rock site. The results show that the nuclear island increases the peak acceleration of the soft rock site. As the input ground motion increases, the ground surface peak acceleration increases accordingly, but due to the nonlinear effect of the soft rock site, the acceleration amplification factor shows a decreasing trend. Under the far-field ground motion, the ground surface acceleration increases significantly and may cause a strong potential destruction to the nuclear island. A non-free field (with a nuclear island) moves the ground surface acceleration response spectrum slightly toward the long-period direction. Under the near-field ground motion enriched with high-frequency components, the ground surface peak acceleration response spectrum caused by the nuclear island shows an increasing trend. Our research conclusions can provide useful reference for both the site selection and aseismic design of nuclear power plants.