bluuebunny/crossref_metadata_2025_split huggingface dataset:
Motivating User-Generated Content with Performance Feedback: Evidence from Randomized Field Experiments
Authors: Huang Ni , Burtch Gordon , Gu Bin , Hong Yili , Liang Chen , Wang Kanliang , Fu Dongpu , Yang Bo 
Published: February 2018

We design a series of online performance feedback interventions that aim to motivate the production of user-generated content (UGC). Drawing on social value orientation (SVO) theory, we develop a novel set of alternative feedback message framings, aligned with cooperation (e.g., your content benefited others), individualism (e.g., your content was of high quality), and competition (e.g., your content was better than others). We hypothesize how gender (a proxy for SVO) moderates response to each framing, and we report on two randomized experiments, one in partnership with a mobile-app–based recipe crowdsourcing platform, and a follow-up experiment on Amazon Mechanical Turk involving an ideation task. We find evidence that cooperatively framed feedback is most effective for motivating female subjects, whereas competitively framed feedback is most effective at motivating male subjects. Our work contributes to the literatures on performance feedback and UGC production by introducing cooperative performance feedback as a theoretically motivated, novel intervention that speaks directly to users’ altruistic intent in a variety of task settings. Our work also contributes to the message-framing literature in considering competition as a novel addition to the altruism–egoism dichotomy oft explored in public good settings. The online appendix is available at https://doi.org/10.1287/mnsc.2017.2944 . This paper was accepted by Chris Forman, information systems.
Planter Closing Wheel Effects on Cotton Emergence in a Conservation Tillage System
Authors: Way Thomas R. , Kornecki Ted S. , Tewolde Haile 
Published: February 2018

Abstract. Closing wheels on a row crop planter help provide good seed-soil contact during planting and can influence emergence and crop stand. Various types of closing wheels are available to producers for use on planters. Seven closing wheel types were used on a row crop planter planting cotton in a conservation tillage system during a three-year study on a sandy loam soil and a clay soil. Cotton was planted into a rye cover crop which had been rolled prior to cotton planting. The planter closing wheel type did not significantly affect emergence of cotton plants at 10 days after planting. Keywords: Closing wheels, Cotton, Emergence, Planters, Planting, Presswheels, Seeders, Seeding, Sowing.
Performance and Emissions Control of Commercial-Scale Biochar Production Unit
Authors: Severy Mark A. , Carter David J. , Palmer Kyle D. , Eggink Anthony J. , Chamberlin Charles E. , Jacobson Arne E. 
Published: February 2018

Abstract.Two commercial biochar production machines – a single-auger unit and a larger dual-auger version – were operated to evaluate feedstock specifications, biochar quality, throughput rates, and emissions profiles. Biochar was produced from woody biomass feedstocks of various species, contamination levels, comminution methods, and moisture contents. Feedstocks with ash content exceeding 15% dry basis or moisture content exceeding 25% wet basis were observed to decrease fixed carbon content of biochar and to increase the labor effort required to operate the machine. The dual-auger version of the machine was able to process 380 kg h-1 of biomass feedstock (dry basis) to produce 63 kg h-1 of biochar with a mean electricity demand of 4.5 kW. Average CO, propane, NOx, and SO2 emission rates from the flare of this machine were measured to be 160, 120, 51, and 43 g h-1, respectively, with total particulate matter (PM), PM10, and PM2.5 emission rates of 380, 40, and 4.5 g h-1, respectively. Results from these experiments indicate that high-quality biochar can be produced from a variety of feedstocks, including forest residuals, as long as the ash and moisture content are within the specifications. Future research and development should focus on increasing the throughput of the machine, implementing an automated control system to reduce the operational effort, and improving safety and product consistency. Keywords: Biochar, Biomass, Biomass conversion technology, Carbon sequestration, Forest residuals, Gasification, Pyrolysis.
Demonstration of a Pilot-Scale Plant for Biomass Torrefaction and Briquetting
Authors: Severy Mark A. , Chamberlin Charles E. , Eggink Anthony J. , Jacobson Arne E. 
Published: February 2018

Abstract. A semi-mobile torrefaction and densification pilot plant was constructed in order to determine ideal operating conditions and evaluate briquette quality and throughput rate using forest residuals as the input feedstock. Experiments were conducted at various conditions with feedstock moisture content ranging from 4% to 25% (wet basis), reactor residence times of 10 and 20 min, and final product temperatures between 214°C and 324°C. Optimal operating conditions, evaluated based on throughput rate, specific electricity demand, torrefied briquette grindability, briquette volumetric energy density, and briquette durability, were identified to occur with a short residence time (10 min), low feedstock moisture content (&lt;11% wet basis), and high final product temperature between 267°C and 275°C. These conditions were able to process 510 to 680 kg h-1 (wet basis) feedstock with a dry mass yield of 79% to 84% to produce torrefied biomass with a higher heating value of 21.2 to 23.0 MJ kg-1 (dry basis) compared to 19.6 MJ kg-1 for the original biomass. Torrefied briquettes produced at these conditions had a neatly stacked packing density of 990 kg m-3 and a volumetric energy density of 21,800 MJ m-3. Their specific grinding energy was an average 37% of the energy required to grind a raw biomass briquette. These torrefied briquettes were more durable (94% DU) than raw briquettes (85% DU) directly following production, but were less durable after undergoing temperature and humidity fluctuations associated with long distance transportation (74% DU for torrefied and 84% DU for raw biomass briquettes). Results from this pilot plant are promising for commercial scale production of high quality torrefied briquettes and should lead to additional research and development of a torrefaction system optimized for a higher throughput rate at these conditions. Keywords: Biomass, Biomass conversion technology, Bioenergy, Briquetting, Densification, Forest residuals, Pyrolysis, Torrefaction.
A Forest-to-Product Biomass Supply Chain in the Pacific Northwest, USA: A Multi-Product Approach
Authors: Berry Michael David , Sessions John 
Published: February 2018

Abstract. A comprehensive biomass supply chain landscape model is presented to provide an analysis of transportable biomass conversion facility design and evaluate its potential economic viability. This study focuses on the generation of a tactical-based landscape model to optimize biomass extraction, transportation, conversion and product production within a market system. The model considers various pathways including supply options at landings (burn, grind, chip, bale), centralized landings (grind/chip), biomass conversion facilities (biochar, briquettes, torrefied wood) and delivery to final market. The model solves a multi-period, multi commodity, multi-echelon combinatorial problem to maximize net present value using a genetic algorithm. The landscape is evaluated over a one year planning horizon with monthly time steps simulating a transportable conversion facility mobilization cycle. A hypothetical biochar facility located in Lakeview, Oregon was used as a case study. A sequence of scenarios are used to vary system inputs (logistics, product pricing and moisture management strategies) to put bounds around system viability. The results provide an economic framework to view the Pacific Northwest forest harvest residues processing, conversion and transportation supply chain options. System viability is largely dependent on market pricing, plant assumptions and conversion estimates while processing and transportation logistics are smaller, but important contributors for small scale biomass conversion faculty design configurations. Keywords: Biomass supply, Biomass products, Facility location, Tactical planning, Transportable plants.
Chemopreventive Efficacy of Ginger Extract (Zingiber officinale)
Authors: Harliansyah Harliansyah , Zurinah W.N. Wan , Anum M.Y. Yasmin , Azian M. Noor 
Published: February 2018

The liver cells were cultured in the presence of ginger extract at various concentrations (0-1 mg /ml) for 24 h and the cells viability and proliferation rate were evaluated by MTS and BrdU assays, while apoptosis was evaluated by colorimetric determination of caspase 8 and 3 activities. Ginger extract exhibited a dose dependent inhibition of viability and proliferation of WRL-68, HLE and HepG2 cells with IC50 of 569.69 ± 7.99 µg/ml, 389.71 ± 26.56 µg/ml and 358.71 ± 17.12 µg/ml respectively. Ginger extract induced apoptosis through activation of caspase-8 and 3 in a dose dependent pattern for all cells at concentration ranging from 0-500 mg/ml. We found that antiproliferative effect of ginger extract could be associated with induction of apoptosis as shown by increased activities of caspase 8 and 3.The results from this study suggest that ginger extract has chemopreventive properties against hepatoma cells HepG2 and HLE by inhibiting cellular proliferation and inducing apoptosis.Keywords : antiproliferation, apoptosis, caspases, Zingiber officinale
Taraxacum officinale Leaves Ethanolic Extract as Immunostimulatory Agent For Reducing Side Effect of Doxorubicin in Sprague Dawley Rats
Authors: Kasianningsih Sri , Rivanti Erlina , Pratama Ratih Hardika , Pratama Nanda Resa , Ikawati Muthi' , Meiyanto Edy 
Published: February 2018

Doxorubicin as chemotherapeutic agent causes immunosuppresive. The aim for this study to determine the effect of ethanolic extract of Taraxacum oficinale (ETO) in immunity system of Sprague Dawley rat that induced by doxorubicin to observe the profile of immunity cells. Sprague Dawley rats were divided into five groups each groups contain five rats: control doxorubicin group, doxorubicin dose 4,67 mg/kgBW+ ETO dose 1000 mg/kgBW, doxorubicin dose 4,67 mg/kgBW+ ETO dose 500 mg/kgBW, control extract group, and without treatment. Then the number of leukocytes, lymphocytes and neutrophils were analyzed by hematology analyzer, whereas CD8+ T lymphocytes by flowcytometry. Results showed groups of doxorubicin combined with ETO dose 1000 mg/kgBW and 500 mg/kgBW increased the number of leukocytes, lymphocytes, neutrophils, cytotoxic CD8 + T cells T cells compared to control doxorubicin group. These data presents that etanolic extract of Jombang leaves has immunostimulatory activity and potential as co-chemotherapy agents. Molecullar mechanism underlaying it’s immune activity need to be explored in detail.Keywords: co-chemotheraphy, doxorubicin, immunostimulatory, in vivo Taraxacum officinale
Lymphocyte Proliferation Activity MTT -Test of Ethanolic Extract of Pasak Bumi Root (Eurycoma longifolia Jack) On Induced 7,12-Dimethylbenz[A] Antracene (DMBA) Female Sprague Dawley Rat
Authors: Falah Lily Noor , Yuliani Sapto 
Published: February 2018

Pasak bumi root (Eurycoma longifolia Jack) contains quasinoid. Quasinoid potentially has antitumor/anticancer, anti-parasitic, and immunostimulatory activity. The aim of this research was to study the lymphocyte proliferation activity MTT-test of ethanol extract of Eurycoma longifolia Jack root on induced by 7,12-dimethylbenz[a] antracene (DMBA) female Sprague Dawley rat. The test was done at 6 groups of 10 SD rat each. Each groups was administered orally with DMBA (Group I) dose of 20 mg/kg bw, corn oil (Group II), baseline (Group III), and ethanol extract of pasak bumi root dose 12.6; 25.2; and 50.4 mg/kg bw (Group IV,V,and VI). Ethanol extract is given for 5 weeks. At the second week five rats were sacrificed to isolate the lymphocytes of spleen then rats are injected orally with DMBA 2 times a week for 5 weeks. At the eight until twenty fourth week all groups were just administered by aquades. Measurement of spleen relative weight and isolation of the lymphocyte spleen were done at second week and the last of experiment. Lymphocyte proliferation activity were measured by MTT-reduction method. Data were analyzed statistically by analyzes of variance (anova) continued by LSD test and Kruskall Wallis continued by Mann Whitney test. The result showed that limphocyte proliferation activity MTT of ethanol extract of E. longifolia root doses of 12.6; 25.2; and 50.4 mg/kg bw for 14 days prior to DMBA-induced are 339.35 ± 8.43;61.20 ± 6.27;310.28 ± 6.81 and dose 50,4 mg/kg bw after DMBA-induced is 122.108 ± 11.426 .Keyword: E. longifolia root, spleen, lymphocyte cell, 7,12-Dimetilbenz (a) antracene (DMBA)
The Cytotoxic Activity of Solanum Nigrum Ethanolic Extract on Widr Human Colon Cancer Cells
Authors: Maruti Astrid Ayu , F. Ilham Augusta , Putri Dyaningtyas Dewi Pamungkas , Hermawan Adam , Ikawati Muthi' 
Published: February 2018

Solanum nigrum L. or Leunca in Indonesia has been traditionally used as a herbal plant, which is believed to have anti-tumor properties, although the mechanism for the activity remains unknown. The resecarch aim to examine the cytotoxic effect of the ethanolic extract of Solanum nigrum on WiDr human colon cancer cells. In this study, we prepared an ethanol extract from herb of Solanum nigrum and investigated the mechanism involved in its growth-inhibitory effect on WiDr human colon cancer cells. Herbs of Solanum nigrum dry powder is extracted with 70% ethanol then added into the WiDr cell culture in 96 wells plate in various concentration : 50, 100, 250, and 500 µg/ml. Cytotoxicity of the Solanum nigrum ethanolic extract was analyzed with MTT assay on WiDr human colon cancer cell lines. Results from the MTT assay showed WiDr cells was weakly suppressed in the presence of the extract. The result of the assay also showed a very close correlation between the Solanum nigrum extract concentration and the surviving cell numbers which means the extract caused cell death in a dose-dependent fashion in WiDr cancer cells with the IC50 of 359,23 µg/ml. Collectively, the research suggest further studies to explore other chemopreventive possibilites of Solanum nigrum ethanolic extract.Keywords : colon cancer, MTT assay, cytotoxic, WiDr, Solanum nigrum
The Philosophy of Artistic Creation: Phidias, the Ideas, and Cicero
Authors: Motta Anna 
Published: February 2018

AbstractSince Antiquity Phidias seems to be the best sculptor of Gods, because he carved great statues with his human hands and succeeded in giving a physical look to that which is not visible to human eyes. This paper is devoted to Cicero’s attention on the imaginative creation of the artist and on the philosophical features of that demiurgical activity which the Roman philosopher links to his interpretation of the Platonic theory of the Forms. The survey led on some Ciceronian texts shows, from a philosophical and philological point of view, the way in which Cicero reconsiders the role of the phantasia, offering a revalution of the art.
The Now and the Relation between Motion and Time in Aristotle: A Systematic Reconstruction
Authors: Sentesy Mark 
Published: February 2018

Abstract
This paper reconstructs Aristotle’s account of the now to clarify the relationship between motion and the number of time. If time is the number of motion, then the priority of motion can be grasped by examining his theory of number. The paper gives a systematic overview of the now in relation to motion, to the constitution of units, and to number in general. This shows that, for Aristotle, the now is not itself an extended unit, and defends his view against claims that time is implicitly prior to motion. The temporal number is co-constituted by the soul and motion, and the now is key to understanding how this occurs. This paper shows that, just as numbers are generated by the soul, time emerges through the soul’s articulation of motion using a now. The now is a limit that marks out and sets up the abstraction of a temporal unit from its underlying motion. This reconstruction provides a strong basis for the claim that time is ontologically dependent on motion, and secondarily on the soul.
The Robin function and conformal welding – A new proof of the existence
Authors: Dittmar Bodo 
Published: February 2018

Abstract
Green’s function of the mixed boundary value problem for harmonic functions is sometimes named the Robin function

R
⁢

(
z
,
ζ
)

{R(z,\zeta\/)}

after the French mathematical physicist Gustave Robin (1855–1897).
The aim of this paper is to provide a new proof of the existence of the Robin function for planar n-fold connected domains using a special version of the well-known Koebe’s uniformization theorem and a conformal mapping which is closely related to the Robin function in the simply connected case.
Physical Properties, Carotenoids and Antioxidant Capacity of Carrot (Daucus carota L.) Peel as Influenced by Different Drying Treatments
Authors: Lau Wai Keong , Van Chuyen Hoang , Vuong Quan V. 
Published: February 2018

Abstract
Carrot peel generated from the juice factories is considered as waste and it can be potential for further recovery of carotenoids. Drying treatment is essential to minimise degradation of carotenoids and ease transportation as well as storage of the peel for further processing. This study aimed to determine the impact of different drying conditions on its physicochemical and antioxidant properties to propose the most suitable conditions for drying carrot peel for further recovery of carotenoids. Drying conditions were found to significantly affect retention of total carotenoids, β-carotene, lutein and lycopene as well as antioxidant capacity in carrot peel. Optimal conditions for hot-air drying were at 40 °C for 3.5 h; vacuum drying were at 60 °C, −60 kPa for 4 h; dehumidification drying was at 50 °C for 2.5 h with relative humidity (RH) of 16–21 %; and microwave drying was at 600 W for 7 min. In comparison with freeze drying (control) and other three different drying methods at each optimal conditions, dehumidification drying at 50 °C with RH of 16–21 % was the most effective method as it retained high levels of total carotenoids (2.75 mg/g DW), β-carotene (1.57 mg/g DW), lutein (0.17 mg/g DW) and lycopene (0.78 mg/g DW). Dried carrot peel also had potent antioxidant properties (ABTS: 4.71 and CUPRAC: 19 mM TE/g DW). Therefore, these conditions are recommended for drying carrot peel for further recovery of carotenoids.
Risks of using SSRI / SNRI antidepressants during pregnancy and lactation
Authors: Dubovicky Michal , Belovicova Kristína , Csatlosova Kristína , Bogi Eszter 
Published: February 2018

Abstract
At present, affective disorders are among the most commonly diagnosed mental diseases. In pregnancy, they can occur as pre-delivery depression, recurrent depressive disorder or postnatal depression. The estimated prevalence of depressive disorders in pregnancy is approximately 9–16%, with some statistics reporting up to 20%. Approximately 2–3% of pregnant women take antidepressants during pregnancy, and the number of mothers treated increases by birth to 5–7%. Treatment of depression during pregnancy and breastfeeding is a controversial issue, as antidepressants can negatively affect the developing fetus. According to epidemiological studies, the effects of treated depression in pregnancy are related to premature birth, decreased body weight of the child, intrauterine growth retardation, neonatal adaptive syndrome, and persistent pulmonary hypertension. However, untreated depression can adversely affect maternal health and increase the risk of preeclampsia and eclampsia, as well as of subsequent postnatal depression, which can lead to disruption of the mother-child relationship. Based on the above mentioned facts, the basic question arises as to whether or not to treat depression during pregnancy and lactation.
Impacts of dietary exposure to sodium or potassium salts of nitrate and nitrite on the development of Drosophila melanogaster
Authors: Basak Ashim Kumar , Chatterjee Tridip , Ghosh Swapan Kumar , Chakravarty Amit 
Published: February 2018

Abstract
The effects of four food additives, namely sodium nitrite (NaNO2), sodium nitrate (NaNO3), potassium nitrite (KNO2), and potassium nitrate (KNO3), on animal development were evaluated by using Drosophila melanogster, a model organism. Adult male and female flies were allowed to breed in culture medium, each containing one of 4 concentrations, i.e.10, 20, 30 or 40 mM of the above mentioned salts. The concentration of 40 mM, NaNO2 and KNO2 completely arrested the development of the flies. Of the different concentrations of the four salts tested, exposure of flies to 30 mM NaNO2 exhibited only significant delays in the initial appearances of third instar larvae, pupae and young adults, along with huge reduction in the number of pupae and young adults compared to controls. Rearrangements like inversions, deletion looping, regional shrinking, as well as highly enlarged puffing, etc. were also observed in the polytene chromosomes of the third instar larvae exposed to 30 mM NaNO2. Developmental outcomes of the flies exposed to varying concentrations of NaNO3 and KNO3 did not differ significantly from the controls. Owing to the extensive genetic homology between Drosophila and human and the successful uses of this fly as models in developmental and toxicological studies, we speculate that the experimental results exhibited by this organism in our study strongly advocate for abstaining from the dietary use of NaNO2 and KNO2 during human pregnancies to avoid possible negative developmental outcomes.
Comparative effects of meso-2,3-dimercaptosuccinic acid, monensin, and salinomycin on cadmium-induced brain dysfunction in cadmium-intoxicated mice
Authors: Ivanova Juliana , Petrova Emilia , Kamenova Kalina , Gluhcheva Yordanka 
Published: February 2018

Abstract
Cadmium (Cd) is a risk factor for neurodegenerative diseases. The purpose of this study was to compare the effects of meso-2,3-dimercaptosuccinic acid (DMSA) and the polyether ionophorous antibiotics monensin and salinomycin on Cd-induced neurodegenerative alterations in mice. The results show that subacute intoxication of mice with Cd (II) acetate (20 mg/kg body weight (BW) for 14 days) caused a significant accumulation of cadmium (Cd) in the brain. Treatment of Cd-exposed mice with DMSA (20 mg/kg BW for 14 days) significantly increased the Cd concentration in the brains compared to those of the Cd-treated group. However, administration of monensin (20 mg/kg BW for 14 days) or salinomycin (20 mg/kg BW for 14 days) significantly reduced the Cd concentration in the brains of Cd-treated mice compared to the toxic control group. Histopathological analysis of brain tissues from the Cd-treated mice revealed that Cd induced neuronal necrosis, characterized by many shrunken, darkly stained pyknotic neurons with prominent perineuronal spaces. Whereas monensin and salinomycin significantly reduced the adverse effects of Cd on brain morphology of Cd-treated mice, DMSA did not. Monensin slightly increased the copper and iron endogenous levels in the brains of Cd-exposed mice compared to those of the untreated mice. Salinomycin did not affect the concentrations of biometal ions in the brain of Cd-exposed mice compared to untreated controls. The results demonstrated salinomycin to be a better potential chelating agent for treatment of Cd-induced brain injury compared to DMSA and monensin.
The crystal structure of catena-poly[bis((4-aminophenyl)sulfonyl)(pyrimidin-2-yl)amido-κ2
N,N′)-bis(μ2-4,4′-bipyridine-N,N′-κ2
N:N′)zinc(II) – methanol (1/2), C32H34N10O6S2Zn
Authors: Zhang Xiaofeng , Cao Yi , Wang Yanwei , Wang Shimin , Xu Zhizhong 
Published: February 2018

Abstract
C32H34N10O6S2Zn, monoclinic, C2/c (no. 15), a = 24.243(4) Å, b = 11.2766(17) Å, c = 15.799(5) Å, β = 127.986(2)°, V = 3404.0(13) Å3, Z = 4, Rgt
(F) = 0.0432, wRref
(F
2) = 0.1146, T = 100(2) K.