bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mathematical Model of the Water Quality in Tlogo Ampel Watershed
Authors: Hariono Budi , Wijaya Rizza , Wibowo Michael Joko , Dian Widianta Moh.Munih 
Published: July 2020

Abstract
The observation station of the study is placed at one point of Tlogo Ampel River in Wonokoyo Village, Kapongan Subdistrict, Situbondo Regency with location of 7°70’44 “South Latitude and 114°08’99” East Longitude. Tlogo Ampel River is one of the rivers that through the settlement of society and industry so that naturally experience of degradation of water quality. Sampling is done every month by the related institution that is Sampean River Basin Management Institute. To predict the value of water quality is needed mathematical model change the water quality of Tlogo Ampel watershed. The research parameters included pHysical properties (Temperature and TSS), organic chemical properties (pH, BOD, COD, DO, PO4P and NO3N) as well as microbiological properties (total coli and fecal coli). The results show the Polynomial equation of order 6 for parameters: temperature, TSS, pH, BOD, COD, DO, PO4P, NO3N, total coli and fecal coli respectively are : y = 0,0002x6 - 0,0078x5 + 0,1203x4 - 0,9031x3 + 3,4485x2 - 6,2299x + 27,595; y = -0,0027x6 + 0,1591x5 - 3,1236x4 + 27,249x3 - 108,22x2 + 157,53x + 46,997; y = 0,0002x6 - 0,0085x5 + 0,1342x4 - 1,0398x3 + 4,0441x2 - 7,4089x + 12,505; y = -0,0002x6 + 0,0032x5 + 0,0302x4 - 0,9626x3 + 6,8118x2 - 16,907x + 17,482; y = 0,0005x6 - 0,0328x5 + 0,7417x4 - 7,2595x3 + 31,838x2 - 55,407x + 47,365; y = -0,001x6 + 0,0406x5 - 0,6408x4 + 4,9244x3 - 18,785x2 + 31,901x - 11,853; y = -1E-05x6 + 0,0005x5 - 0,0098x4 + 0,0897x3 - 0,3839x2 + 0,6547x - 0,0902; y = 0,0004x6 - 0,0143x5 + 0,1694x4 - 0,9131x3 + 2,3917x2 - 3,2352x + 4,1306; y = 0,0035x6 - 0,269x5 + 6,3886x4 - 67,262x3 + 337,4x2 - 741,18x + 612,7; y = 0,0011x6 - 0,0963x5 + 2,2449x4 - 22,035x3 + 100,4x2 - 193,42x + 140,76
Optimal harvesting and stability of predator-prey model with holling type II predation respon function and stage-structure for predator
Authors: Pratama R A , Ruslau M F V , Suryani D R , Meirista E 
Published: July 2020

Abstract
This article develops mathematical models with structural stages from predators, immature and mature predators. The predation function of mature predators follows the Holling II response function. We assume that the immature predator population has the economic value, therefor the harvesting function is included in this model. In this model an analysis of the equilibrium point and stability of the interior equilibrium point is carried out. Analysis of the stability of the interior equilibrium points is done by linearization method and pay attention to the eigenvalues of the characteristics of the Jacobi matrix obtained. Analysis of equilibrium point stability is carried out before and after harvesting. The result is obtained by each of the three equilibrium points. At the equilibrium point of the interior with stable harvesting a local maximum profit analysis is obtained from the exploitation business. Based on the results of the analysis, it is obtained the value of harvesting business which provides a stable equilibrium point and maximum profit.
Determining Numbers of Coloring λ-Backbone On Split Graph
Authors: Tsulutsya Fatanur Baity , Alisah Evawati , Ilahi Lailiy Kurnia 
Published: July 2020

Abstract
Vertex coloring on a graph
G = (V (G), E(G)) giving color for each point on the graph so that there are no two connected directly the same color. A vertex coloring f from graph G is called coloring Backbone - λ of (G,H) if fulfilled |f(υ) – f(ν ≥ λ)|. The smallest number k where there is backbone coloring
f: V → {1,2,3,…,k} is called several Backbone coloring - λ and denoted by
BBC

λ
(G,H). A graph used in this research is a split graph. This paper presents the process or steps to determine coloring number λ-backbone on a split graph. As for the steps is as follows: determine split graphs, give 1 example of Spanning subgraph (Backbone) containing subgraphs complete maximum of split graphs and contains Hamilton trajectories and give a point coloring on the Hamilton trajectory backbone of the split graph.
Modeling and Resource Classification Lateritic Nickel Deposits on a Heterogeneous Block in The Haul-Sagu Area using Estimation and Simulation Geostatistical Method
Authors: Conoras W A K , Lamburu A A 
Published: July 2020

Abstract
Deposits modeling is a very important thing in the exploration field, especially in estimating reserves. This research was conducted to model the geometry of lateritic nickel ore deposition on heterogeneous blocks using the geostatistical estimation method Ordinary kriging (OK) and simulation methods namely, Sequential Gaussian Simulation (SGS) then the distribution of laterite zonation was carried out to calculate the resource and mineral resource classification based on estimation data and simulation. The estimation results using the OK method have an average value of Ni higher than the average Ni grade from the SGS simulation results. Analysis of the calculation of total tonnage of resources from the estimated OK data shows the total amount of measured tonnage of 5,875 tons is far lower than the amount of resource tonnage from the SGS simulation data which displays the total amount of tonnage measured 189,766 tons. However the average grade of Ni from measured OK Resources is 1.49% higher, compared to the average Ni grades from measured resources of SGS 1.33%. with a difference of 0.16% Ni grades. The opposite occurs when the average Fe grade of the measured OK resource is lower 24.15% compared to the average Fe grade of the Measured resource of SGS 32.81% with a very large difference in Fe grade of 8.66%.
Essential Oil from A Satisfying Evening Flower with Enfleuration Process
Authors: Sari N K , Erydani A , Imannuril N J , Ernawati D , Wurjani W 
Published: July 2020

AbstractA Satisfying evening flower (Polianthes Tuberos) is done concurrently as cut flowers, so that many flowers are rotten and wasted as garbage, the other utilization as essential oil. The influence of adsorbent and texture type Polianthes Tuberos to essential oil yield. The results showed that each adsorbent gave the yield of a mixture of vegetable and animal fat with a water content of 0.21%, the amount of water content indicates the hardness degree of the adsorbent. The essential oil obtained clear yellow, smells typical a very strong of them, does not leave spots on the filter paper and the yield obtained 4.279%. Enfleuration technique is a good technique for the intake of essential oils from flowers
Effect of Temulawak (curcuma zanthorrizha) Extracts Addition as Natural Antioxidant Against The Destruction of Palm Oil in Frying Process
Authors: Sarofa U , Winarti S , Rahayuningsih N 
Published: July 2020

Abstract
Curcumin that is extracted from Temulawak (curcuma zanthorrizha) is a natural source of antioxidants. It can be added in palm oil to reduce the destruction caused of heat in frying process. The method used in this study was a completely randomized design (CRD) with a single factor, each repeated 3 times and to know the difference was used the DMRT test. The research was conducted in two stages. First stage is to determine the best concentration of curcumin added into palm cooking oil (0 ppm, 300 ppm, 600 ppm, 900 ppm, 1200 ppm) while the second stage is to test the stability of curcumin in palm cooking oil used to fry for four times of frying. The results of the study showed that the best curcumin extract addition is concentration of 1200 ppm, where the cooking oil has characteristics iodine value of 60.790 gr I2 / 100 gr, peroxide number 1.033 mEq / Kg, free fatty acid 0.076%, moisture content 0.061%, smoke point 193.33C and antioxidant activity 62.469%. The results of the stability of curcumin extract on palm cooking oil during the fourth frying process were iodine value 60,509 gr I2 / 100 gr(0.36% decrease), peroxide number 1,798 mEq / Kg (59.39% increase), free fatty acid 0.096%( 12.94%increase), moisture content 0.245% (218.18%increase), smoke point 174,00C (6.70% decrease)and antioxidant activity (DPPH) 56,092%(6.93% decrease).
Photoinhibition of Algal Photobioreactor by Intense Light
Authors: Farahdiba A U , Cahyonugroho O , Nindhita S N , Hidayah E N 
Published: July 2020

Abstract
Algal photobioreactor is a translucent reactor equipped with media supply installation and gas emissions to cultivate microalgae with CO2. Alga as an autotroph organism, growth mechanism following photosynthesis system which use light exposure to develop and growth the algae cells. There are abiotic, such as light, and biotic factors. This study analyses the performance of Chlorella sp. within intense light intensity (6, 12, 18, and 24 hour) variable with using UV fluorescence. The environment condition and growth rate were analysed of microalgae in the photobioreactor. R reactor control have reducing performance to remove phosphate concentration. Nevertheless, is not clearly explain the direct connection between nutrient and light intensity. Algal growth influenced by the intense of light intensity (hours exposure), and likely will affect to nutrient concentration in the photobioreactor. Light intensities in this research is not directly affect to algal biomass production, while the light intensities might be low to enhance the biomass.
Assessment of the Effectiveness on Domestic Rainwater-harvesting Wells (SPAHUDO) in the Northern Area of Denpasar City – Bali Indonesia Through Ergo-Hydrogeology Approach
Authors: Sudiajeng L , Wiraga I , Mudhina M , Waisnawa I G N S , Sudiarsa I M 
Published: July 2020

Abstract
This research was conducted to assess the effectiveness on Domestic Recharge Wells that named (SPAHUDO). It’s designed as one of the output of long-term research (2013-2025) on the Model of Groundwater Conservation Program through Ergo-Hydrogeology approach. It synergized the hydrogeology approach, which is more focuses on the technical data of hydrogeology and geotechnical, while ergonomic approach is focuses on human aspect included in the research process, design, and product. The technical assessment of the effectiveness of SPAHUDO was conducted by using the basic formula of both hydrology and geotechnical, confirmed by user based ergonomic approach. The synergized between technically and human aspect is very important for sustainability of the implementation of SPAHUDO.
Making incremental progress: impacts of a REDD+ pilot initiative in Nepal
Authors: Sharma Bishnu P , Karky Bhaskar S , Nepal Mani , Pattanayak Subhrendu K , Sills Erin O , Shyamsundar Priya 
Published: July 2020

Abstract
Reducing emissions from deforestation and forest degradation (REDD+) encompasses a range of incentives for developing countries to slow, halt and reverse forest loss and associated forest carbon emissions. Where there is high dependence on biomass energy, cleaner cooking transitions are key to REDD+’s success. Given the poor track record of efforts to promote clean cooking, more evidence is needed on the potential for REDD+ to reduce unsustainable extraction of biomass energy. We present a quasi-experimental impact evaluation of REDD+ in Nepal. Unsurprisingly, we find little evidence of impacts on forest carbon in just two years. We do find that REDD+ reduced forest disturbance as measured by four plot-level indicators (signs of forest fire, soil erosion, encroachment and wildlife) that are predictive of future changes in net carbon emissions and reflective of reduced extraction pressure by households. While our analysis of household survey data does not show that REDD+ reduced harvest of forest products, we find some evidence that it reduced household dependence on firewood for cooking, possibly by increasing use of biogas. Thus, communities in Nepal appear to have improved conditions in their forests without undermining local benefits of those forests. To secure progress towards reduced emissions and improved livelihoods, interventions must be designed to effectively meet household energy needs.
The Relationship Between Coping Strategies and Sleep Problems: The Role of Depressive Symptoms
Authors: Kozusznik Malgorzata W , Puig-Perez Sara , Kożusznik Barbara , Pulopulos Matias M 
Published: July 2020

AbstractBackgroundSeveral studies have proposed that coping strategies are a key predictor of sleep problems. Furthermore, some authors have suggested that depressive symptoms, a factor that is related to both coping strategies and sleep, may play a critical role in this relationship. However, this preliminary research has shown mixed results.PurposeThe aim of this research was to study the relationship between coping strategies (i.e., emotion-focused and problem-focused coping) and sleep, and investigate whether this relationship is direct or mediated by depressive symptoms.MethodsUsing a cross-sectional design, we tested this idea in a sample of 723 participants from the Midlife in the United States 2 study (mean age = 54.22 years, age range = 25–74 years, 54.40% females, 95.1% had at least a high school education). We applied mediation analyses with bootstrapped bias-corrected 95% confidence intervals to test total, direct, and indirect effects. Coping and depression were assessed using questionnaires. Objective and subjective sleep quantity and quality were measured using the Pittsburgh Sleep Quality Index, sleep diaries, and actigraphy.ResultsThe results show that low emotion-focused coping and high problem-focused coping are associated with lower depressive symptoms, which, in turn, are associated with better objective and subjective sleep quality. Moreover, greater use of emotion-focused coping is related to more perceived sleep time.ConclusionsThis study sheds light on the process of the development of sleep problems in people who use different coping strategies. It offers explanations for the association between emotion-focused and problem-focused coping and sleep problems, via depressive symptoms.
Clinical clustering of eight orthostatic haemodynamic patterns in The Irish Longitudinal Study on Ageing (TILDA)
Authors: Moloney David , O’Connor John , Newman Louise , Scarlett Siobhan , Hernandez Belinda , Kenny Rose Anne , Romero-Ortuno Roman 
Published: July 2020

AbstractBackgroundOrthostatic hypotension (OH) can be assessed with non-invasive continuous beat-to-beat haemodynamic monitoring during active stand (AS) testing; this yields large volumes of data outside the scope of the traditional OH definition. We explored clinical associations of different AS patterns in participants from Wave 1 of the Irish Longitudinal Study on Ageing.MethodsAS patterns were generated based on three sequential binary systolic blood pressure features: drop ≥40 mmHg within 10 sec post-stand (“immediate deficit”), failure to return to within 20 mmHg of supine level at 40 sec after standing (“stabilisation deficit”) and drop ≥20 mmHg between &gt;40 and 120 sec post-stand (“late deficit”). Eight AS groups resulted from combining the presence/absence of these three features. The groups were cross-sectionally characterised, and their ability to independently predict orthostatic intolerance (OI) during AS, and falls or syncope in the past year, was evaluated using multivariate logistic regression models.ResultsA total of 4,899 participants were included (mean age 61), of which 3,312 (68%) had no deficits. Older age was associated with stabilisation deficit and late deficits were seen in groups with higher proportions of beta blockers and psychotropic medications. Regression models identified independent associations between OI and three immediate-deficit groups; associations seemed stronger as more deficits were present. There was a significant association between falls history and the three-deficit group (odds ratio 1.54, 95% confidence interval: 1.15–2.07, P = 0.004).ConclusionsMore deficits seemed associated with the higher risk of OI and falls history. Observations are not causal but the recognition of these patterns may help clinicians focus on careful prescribing.
The additive effect of biochar amendment and simulated nitrogen deposition stimulates the plant height, photosynthesis and accumulation of NPK in pecan (Carya illinoinensis) seedlings
Authors: Hou Zhiying , Tang Yiquan , Li Caiyun , Lim Kean-Jin , Wang Zhengjia 
Published: July 2020

Abstract
This work investigated the effective doses of biochar (BC) amendment with simulated nitrogen deposition on the stimulation of pecan (Carya illinoinensis) growth. A total of nine conditions combining three levels of BC—BC0, 0 t ha−1 year−1; BC20, 20 t ha−1 year−1; and BC40, 40 t ha−1 year−1—and three levels of simulated nitrogen deposition—N0, 0 kg N ha−1 year−1; N50, 50 kg N ha−1 year−1; and N150, 150 kg N ha−1 year−1—were applied throughout 1 year on the pecan-grafted seedlings of cultivar ‘Pawnee’. The growth, photosynthesis, chlorophyll and nutrient content in the seedlings were measured. The soil bulk density, pH, nitrogen content and enzymatic activities were also measured. Biochar amendment reduced soil bulk density and elevated soil pH. Meanwhile, aided by BC amendment, the inorganic nitrogen content and enzyme activities increased with increasing doses of nitrogen. In the absence of BC amendment, the seedlings’ height, photosynthesis and chlorophyll pigments were only stimulated by a low level of simulated nitrogen deposition (N50), whereas a high level of simulated nitrogen deposition (N150) impeded the growth. The seedlings improved the most under the combined treatment of BC20N150, wherein the seedling heights, photosynthesis and total chlorophyll improved by 22 %, 70 % and 40 %, respectively, compared to those treated solely with BC20. Further increase of nitrogen retention in the soil by the BC40 did not further improve the growth of the seedlings, suggesting the possible mechanisms involve nutrient uptake and usage dynamic in the seedlings. The BC amendment alleviated the antagonist effect from simulated nitrogen deposition that suppressed the absorption of phosphorus, potassium and iron. The effect of applying both BC amendment and simulated nitrogen deposition to the growth of seedlings was additive at fertilizing tree species.
The five million bird eggs in the world’s museum collections are an invaluable and underused resource
Authors: Marini Miguel Ângelo , Hall Linnea , Bates John , Steinheimer Frank D , McGowan Robert , Silveira Luis Fábio , Lijtmaer Darío A , Tubaro Pablo Luis , Córdoba-Córdoba Sergio , Gamauf Anita , Greeney Harold F , Schweizer Manuel , Kamminga Pepijn , Cibois Alice , Vallotton Laurent , Russell Douglas , Robinson Scott K , Sweet Paul R , Frahnert Sylke , Corado René , Heming Neander Marcel 
Published: July 2020

AbstractThe ~1.97 million egg sets (~5 million eggs) housed in museums have not been used in proportion to their availability. We highlight the wide variety of scientific disciplines that have used egg collections and the geographic locations and sizes of these collections, to increase awareness of the importance of egg collections, improve their visibility to the scientific community, and suggest that they offer a wealth of data covering large spatial scales and long time series for broad investigations into avian biology. We provide a brief history of egg collections and an updated list of museums/institutions with egg collections worldwide. We also review the limitations, challenges, and management of egg collections, and summarize recent literature based on historical and recent museum egg materials.
The Helpful Brain? Translations of Neuroscience into Social Work
Authors: Gibson Margaret F 
Published: July 2020

AbstractWhat do the many translations of ‘the brain’ from the domain of neuroscience offer to social work researchers? Drawing upon disability studies and critical social work, this article examines trends and tensions across ‘neuro’ writing in social work journals and summarises some commonly recommended practices. Neuroscientific discourse has undeniable cultural influence and offers distinctive forms of evidence to social workers. Social work scholars have strategically translated neuroscience findings to access greater disciplinary status, to counter neo-liberal onslaughts on public services, to communicate on inter-disciplinary teams and to address calls for ‘new’ scholarship. At the same time, many writers readily acknowledge that they use neuroscience to justify or even revive well-established social work practices and theories. A unidirectional strategy of translation across disciplines comes with inherent risks of reinforcing hierarchy, ignoring social difference and undermining the value of social work research and practice. Neurodiversity discourse offers one example of ‘neuro’ argumentation where social justice and neuroscience have intertwined and may present an opportunity for a different type of social work translation. Social workers should be prepared to engage with neuroscience but must do so in ways that consistently reinforce social justice commitments and include a wide array of perspectives.
Recent progress in translational engineeredin vitromodels of the central nervous system
Authors: Nikolakopoulou Polyxeni , Rauti Rossana , Voulgaris Dimitrios , Shlomy Iftach , Maoz Ben M , Herland Anna 
Published: July 2020

AbstractThe complexity of the human brain poses a substantial challenge for the development of models of the CNS. Current animal models lack many essential human characteristics (in addition to raising operational challenges and ethical concerns), and conventional in vitro models, in turn, are limited in their capacity to provide information regarding many functional and systemic responses. Indeed, these challenges may underlie the notoriously low success rates of CNS drug development efforts. During the past 5 years, there has been a leap in the complexity and functionality of in vitro systems of the CNS, which have the potential to overcome many of the limitations of traditional model systems. The availability of human-derived induced pluripotent stem cell technology has further increased the translational potential of these systems. Yet, the adoption of state-of-the-art in vitro platforms within the CNS research community is limited. This may be attributable to the high costs or the immaturity of the systems. Nevertheless, the costs of fabrication have decreased, and there are tremendous ongoing efforts to improve the quality of cell differentiation. Herein, we aim to raise awareness of the capabilities and accessibility of advanced in vitro CNS technologies. We provide an overview of some of the main recent developments (since 2015) in in vitro CNS models. In particular, we focus on engineered in vitro models based on cell culture systems combined with microfluidic platforms (e.g. ‘organ-on-a-chip’ systems). We delve into the fundamental principles underlying these systems and review several applications of these platforms for the study of the CNS in health and disease. Our discussion further addresses the challenges that hinder the implementation of advanced in vitro platforms in personalized medicine or in large-scale industrial settings, and outlines the existing differentiation protocols and industrial cell sources. We conclude by providing practical guidelines for laboratories that are considering adopting organ-on-a-chip technologies.