Miracle-dz/UniFAR-FTUs huggingface dataset:
Short-term steam treatment of MFC gel with and without water-soluble cellulose derivative

Abstract Microfibrillated cellulose (MFC) with and without added CMC was exposed to short-term dynamic thermal treatment using a steam jet cooker. The effects of the elevated temperature (130 °C, ∼3 bar) and shear forces on the rheology, crystallinity index, UV/VIS adsorption and water retention were measured. Jet cooking increased the viscosity and gel strength of the MFC and MFC/CMC mixture but with CMC alone a slight decrease in viscosity was observed. The water retention capacity and crystalline indices of the MFC were not greatly affected by the short-term thermal treatment and shear forces, although a slight increase in the UV/VIS absorbance was observed.
ANALYSIS OF TEMPORAL AND PERIODIC CHANGES OF GROUNDWATER DEPTH AND NITRATE CONCENTRATION USING TIME SERIES MODELING (CASE STUDY: KABUDARAHANG PLAIN)

In this study, ground water level fluctuations and nitrate concentrations of kabudarahang aquifer were investigated with application of time series models for modeling of ground water quantity and quality parameters. For data regarding the status of groundwater level and nitrate concentration fluctuations in project area, time series models were used to forecast the groundwater level and nitrate concentration. Residual error analysis, comparison of observed and calculated ground water levels and nitrate concentrations performed and finally a prediction model for ground water conditions in Kabudarahang aquifer developed. Predicted values were calibrated by the Box-Jenkins, Holt Winters and extrapolation methods. A residual error analysis, based upon calculated and observed groundwater level and nitrate concentrations performed as a model verification tool and finally the Box Jenkins models were evaluated through Portmanteau method and Akaike information criterion. The model verification results showed that the SARIMA model is the optimum algorithm to simulate seasonal input data variables. Model results showed that the groundwater level in this aquifer will endure a 5 meter decline in three upcoming years and indicated that the maximum nitrate concentration would reach 50 mg/l in Bahman and Shahrivar of 1390. Review History: Received: 28 December 2014 Revised: 10 March 2015 Accepted: 25 May 2015 Available Online: 28 September 2015
Fast and Efficient Adsorption of Ag Nanoparticles by Sodium Montmorillonite Nanoclay from Aqueous Systems

Silver nanoparticles (AgNPs) are, due to their antimicrobial properties, the most widely used nanoparticles in commercial products. AgNPs are incorporated into medical products such as bandages, as well as in textiles and household items. Besides its antimicrobial effect, exposure to soluble silver compounds produce toxic effects on all living organisms. In this work, the removal of Ag nanoparticles (AgNPs) using aqueous sodium montmorillonite nanoclay in the presence of a cationic surfactant stabiliser was investigated. The effects of experimental parameters on the adsorption process, such as pH, surfactant concentration, adsorbent dosage, initial AgNPs concentration and contact time, were studied. The Langmuir and Freundlich isotherm models were applied and the Langmuir model was found to best fit the equilibrium isotherm data. Langmuir adsorption capacity was found to be 71.4 mg g−1 of AgNPs at pH 7. The results indicate that sodium montmorillonite nanoclay can be used for the fast and efficient removal of AgNPs from aqueous solutions.
Circular Dichroism Spectroscopy: A Facile Approach for Quantitative Analysis of Captopril and Study of Its Degradation

Simple and selective zero- and second-order derivative circular dichroism (CD) spectroscopic methods have been designed for the assay of captopril in commercially available dosage forms. A normal CD spectroscopic scan (zero order) exhibits a negative band at 208 nm (method A) in distilled water. The calibration curve shows a linear response over the concentration range of 10–80 μg mL–1. The second-order derivative (D2) CD spectrum shows one positive band at 208 nm (method B) and one negative band at 225 nm (method C). Linear calibration curves were obtained in the concentration range of 10–70 μg mL–1 for both the methods (B and C). The detection limits were found to be 1.26, 1.48, and 2.38 μg mL–1 for methods A, B, and C, respectively. The study under stressed acidic, basic, and oxidative conditions showed the degradation of captopril. The proposed methods were validated as per ICH guidelines. All the proposed methods were compared with the reference method to demonstrate its suitability for quality control of captopril in its dosage forms.
Power management techniques in Wireless Sensor Network

In Wireless Sensor Networks (WSN) energy is a limited resource. So, to increase the life time of wireless sensor networks we have to reduce the power consumption of sensor networks. WSN consists of hundreds or thousands of nodes, which doesn't have any infrastructure. When designing a distributed wireless sensor networks power consumption becomes an important challenge. There are several restrictions in the designing process of a sensor network, in which the lifetime of a network should be taken into consideration. The lifetime could depend on the battery device, the protocols used and the topology you used. In this paper, we can discuss the various power management techniques of Wireless Sensor Network which will help to increase the life time of the network.
Method for producing sustained release microsphere preparation

수용성 약학적 활성 성분 및 수-불용성 생체내 분해성 중합체를 이들이 모두 용해될 수 있는 1종 이상의 용매에 용해시키고, 용매를 제거하여 수용성 약학적 활성 성분이 상기 생체내 분해성 중합체내에 분자상태로 분산된 고체 분산체를 수득하고, 상기 고체 분산체를 수-불혼화성이고 비점이 100℃미만인 유기 용매에 용해시키고, 생성된 오일상을 유화제를 함유하는 수성상에 첨가하여 O/W에멀션을 수득한 다음, 생성된 에멀션의 오일상으로 부터 유기 용매를 제거함을 특징으로 하는, 약제의 포함율이 높고 초기 급속 방출이 낮은 수용성 약제의 서방성 미소구 제제의 제조 방법.
C-DNA Content and Chromatin Distribution in Diploid and Large Bovine Sperm Nuclei

The aims of the present work where: i) to determine and compare the DNA content and parameters of chromatin distribution in normal, large and diploid bovine sperm nuclei, ii) to evaluate the frequency of these three classes of nuclei, iii) and to analyze the usefulness of the Feulgen reaction to recognize normal, large and diploid sperm nuclei in bovine ejaculates. Cytophotometric determinations showed that the C-DNA values of normal and large nuclei were not significantly different but differed statistically (P<0.05) from those of diploid nuclei. Cytophotometric parameters related to chromatin distribution showed statistical differences between normal, large and diploid nuclei (P<0.05). The Area and Volume of large sperm nuclei were greater than those of normal nuclei, whereas the Mean and Maximal Absorbance were smaller, suggesting incomplete and/or defective chromatin condensation in large nuclei. Diploid nuclei showed an anisotropic DNA increase with a privileged direction of growth in the perpendicular plane of the principal area of the sperm nucleus. The Feulgen reaction stained the three classes of nuclei with different intensity, allowing us to recognize them clearly using light microscopy. The frequencies of large and diploid bovine sperm nuclei were 0.27% and 0.08% respectively. The morphological description of diploid nuclei differs between authors. We propose that these differences could be the consequence of failures in different pre-meiotic or meiotic stages.
Hydroxyl-Based Hyper-Cross-Linked Microporous Polymers and Their Excellent Performance for CO2 Capture

A series of benzyl alcohol (BA)-based hyper-cross-linked microporous polymers (HCPs) were designed and synthesized via facile Friedel–Crafts alkylation using formaldehyde dimethyl acetal (FDA) as external cross-linker promoted by anhydrous ferric chloride (FeCl3). Results demonstrated that Brunauer–Emmett–Teller (BET) specific surface area and pore volume for the HCPs could be controlled by adjusting the amount of FDA and FeCl3. The HCPs obtained under optimal conditions showed a BET specific surface area up to 1101 m2/g, whose capacity of CO2 uptake could be as high as 3.03 mmol/g at 273 K/1.0 bar. The isosteric heats of CO2 sorption for the BA-based HCPs exceed 27 kJ/mol at the low coverage. In addition, the polymer networks possessed high CO2/N2 selectivity of 42. Compared with those BA-based HCPs which is without FDA, the prepared material has higher BET specific surface area and superior CO2 adsorption properties. These results demonstrated that these prepared HCPs are promising for CO2 capture and s.
Sweetening of Natural Gas Through Hollow Silica Nanoparticles Embedded Hydroxyethyl Cellulose Membrane

Membrane gas separation technique is a promising technique for separation of gases. Nanoparticles (NPs) of hollow spherical silica were synthesized by the hydrolysis and condensation of tetramethylorthosilicate (TMOS). The nanocomposite membranes were prepared by dispersing hollow silica in hydroxyethylcellulose (HEC) polymeric solution and were cast as membranes by solution casting-solvent evaporation procedure. The % loading of NP’s in membrane varied from 0.5 to 2 Wt. %. The effects of experimental parameters such as gas permeability and selectivity at constant pressure were measured for gas transport properties for the prepared membranes. Under constant operating conditions of feed pressure (4.0 MPa) and membrane thickness (50 μm), the CO2 permeability was determined to be in the range 1790-3620 Barrer for nanocomposite membrane from 0.5 to 2 Wt. %, while selectivity declined from 3.7 to 3.1 due to plasticization. This made us to come to the conclusion that the membrane has a double mode of sorption effect. The membranes were characterized with FTIR to confirm the formation of compound and with SEM to study the distribution of nanoparticles in the membrane matrix. Article History Received: 11 October 2018 Accepted: 07 December 2018
Tracing Trade and Improving Predictions: Why the Global Value Chain position of Dutch manufactory sectors matters in assessing the impacts of the Trans-Atlantic Trade and Investment Partnership (TTIP)

When assessing the merits of trade treaties, many indicators can be used. The most influential predictors are distance and the size of an economy. Other predictors are cultural and geographical proxies. The direction of trade is modelled by a Ricardian-based estimator. However, this mechanism has been criticized, especially when it comes to predicting changes in the fragmentation of production. A new generation of datasets makes it possible to shed a different light on the fragmentation of production, through what is called the GVC position. This position can either be upstream, or at the beginning of the production process, or downstream. In my thesis, I argue that like many economic phenomena, the GVC position of sectors and countries has a distinct geography as well. Also, it is a highly influential predictor in the US-Dutch trade relationship, and how the Dutch manufactory sector may profit from closer Trans-Atlantic ties.
Overcoming Water Insolubility in Flow: Enantioselective Hydrolysis of Naproxen Ester

Hydrolytic enantioselective cleavage of different racemic non-steroidal anti-inflammatory drugs (NSAIDs) ester derivatives has been studied. An engineered esterase form Bacillus subtilis (BS2m) significantly outperformed homologous enzymes from Halomonas elongata (HeE) and Bacillus coagulants (BCE) in the enantioselective hydrolysis of naproxen esters. Structural analysis of the three active sites highlighted key differences which explained the substrate preference. Immobilization of a chimeric BS2m-T4 lysozyme fusion (BS2mT4L1) was improved by resin screening achieving twice the recovered activity (22.1 ± 5 U/g) with respect to what had been previously reported, and was utilized in a packed bed reactor. Continuous hydrolysis of α-methyl benzene acetic acid butyl ester as a model substrate was easily achieved, albeit at low concentration (1 mM). However, the high degree of insolubility of the naproxen butyl ester resulted in a slurry which could not be efficiently bioconverted, despite the addition of co-solvents and lower substrate concentration (1 mM). Addition of Triton® X-100 to the substrate mix yielded 24% molar conversion and 80% e.e. at a 5 mM scale with 5 min residence time and sufficient retention of catalytic efficiency after 6 h of use.
Unraveling the contemporary drivers of renewable energy consumption: Evidence from regime types

The detrimental effect of climate change and pollutant emissions has shifted the attention of researchers and policymakers toward renewable energy resources. To unravel the underexplored determinants of renewable energy consumption, this study examines the individual and combined effect of innovativeness, regulatory quality, trade openness, and tax attractiveness after controlling for per capita GDP, financial liberalization, inflation, and political stability. In addition, system‐generalized method of moments estimator is utilized to reduce endogeneity bias in the model. A broader sample size of 85 countries is investigated and further divides it into four sub‐panels on the basis of regime types (full democracy, flawed democracy, hybrid, and authoritarian regime). The findings indicate that innovativeness, regulatory quality, and trade openness are the major drivers of renewable energy consumption in global panel. The combined effect of innovativeness and regulatory policy is also statistically significant on renewable energy consumption. Furthermore, tax attractiveness positively moderates the relationship between trade openness and renewable energy consumption. The results differ across sub‐panels; however, the observed factors explain more variation in renewable energy consumption for full democracy and flawed democracy panels. It is suggested that economies should be shifted from authoritarianism to democracy to improve their public, industrial, trade, and tax policies which may help them to boost the consumption and production of clean energy. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019
Studi In Silico Senyawa Alkaloid Herba Bakung Putih (Crinum Asiaticum L.) pada Penghambatan Enzim Siklooksigenase (COX)

Inflammation is a response to tissue injury involving the physiological process of cyclooxygenase enzyme activation which has two isoforms, cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) enzymes. The use of anti-inflammatory drugs of Non Steroidal Anti Inflammatory (AINS) and steroid groups has side effects in long-term use. The objective of this study was to find out eight active white herbic alkaloid compounds (Crinum asiaticum L.) to be used as anti-inflammatory by inhibiting COX-1 and COX-2 enzymes. Molecular docking method for the prediction of complex structures of proteins called ligand-protein docking using the PLANTS 1.2 software. where the lowest ChemPLP score which is free energy is the molecular tethering parameter. The herbaceous white herbaceae compound obtained the lowest CHEMPLP score of hippadine -83.3684 Kcal / mol and pratorimin -83.2661 Kcal / mol and aspirin comparator -67.3292 Kcal / mol and paracetamol -66.3535 Kcal / mol. Molecular docking in COX-2 shows lycobetaine -87.3991 Kcal / mol is lower than that of the celecoxib -85.3729 Kcal / mol comparator against the cyclooxygenase-2 receptor (COX-2). These results show that the white lycopene alkaloid compounds hyppadine, pratorimin and lycobetaine have better affinity and stability than the comparative compounds. The results of drug scans, hippadin, pratorimin and lycobetaine have the criteria for oral preparations. It can be concluded that herbaceous white herbaceae are predicted to have potential as anti-inflammatory compounds.
Impact of InGaAs carrier collection quantum well on the performance of InAs QD active region lasers fabricated by diblock copolymer lithography and selective area epitaxy

Quantum dot (QD) laser diodes, where the active region consists of wetting-layer-free InAs QDs, were demonstrated by block copolymer (BCP) lithography and subsequent selective area metal-organic vapor phase epitaxy, which results in the QD density of ∼4 × 1010 cm2. In this work, we show that an In0.1Ga0. 9As QW located in close proximity to the wetting-layer-free InAs QDs leads to an enhanced carrier injection into the QDs, allowing for lasing at room temperature (RT). Devices employing InAs QDs grown with and without In0.1Ga0. 9As QW carrier collection layer exhibit lasing at 80 K, while only the lasers grown with the In0.1Ga0. 9As QW exhibits lasing at RT. Driving current-dependent electroluminescence measurements reveals a low carrier injection into the QDs in the device grown without In0.1Ga0. 9As QW carrier collection layer. In addition, the appearance of lasing emission, corresponding to high energy transitions, indicates a relatively flat gain profile for this InAs QD active region grown by SA-MOVPE. In addition, EL measurements at 80 K on devices employing varying thickness (dInAs) QDs indicate the peak emission wavelength varies from 920 nm (dInAs ∼ 1.5 nm) to 974 nm (dInAs = 3 nm), although the devices employing dInAs ∼ 3 nm did not exhibit lasing, possibly because of a significant degree of strain relaxation for this QD thickness.
The Effect of Ultrasonic Wave Exposure on The Chlorophyll-a, b And Carotene Content of Nannochloropsis sp.

Determination of chlorophyll-a, b and carotene content in microalgae is strongly dependent on the destruction of its cell wall during extraction process. Harvesting of microalgae is important because it will influence the nutrition content. The objective of present work is to optimize harvesting of Nannochloropsis sp by application of ultrasonic wave with frequency of 40 KHz under different exposure time. There were 3 treatments, i.e. exposure time of 5, 10 and 15 minutes. The chlorophyll-a, b, and carotene content were measured to gauge the effect of treatments. The result revealed that the cell wall of Nannochloropsis sp which made from carbohydrate were successfully broken by ultrasonic source equipment. It showed that the exposure time of 5, 10 and 15 minutes affected cell wall’s breaking percentage of Nannochloropsis sp cell by 10,35; 32,15; and 72,09 %, respectively. The longer exposure time of ultrasonic wave, the higher content of chlorophyll-a, b, and carotene.
Building Envelope Prefabricated with 3D Printing Technology

The Fourth Industrial Revolution represents the beginning of a profound change for the building sector. In the last decade, the perspective of shapes, materials, and construction techniques is evolving fast due to the additive manufacturing technology. On the other hand, even if the technology is growing fast and several 3D printed buildings are being developed worldwide, the potential of concrete 3D printing in building prefabrication remains unexplored. Consequently, the application of new digital fabrication technologies in the construction industry requires a redesign of the construction process and its components. This paper proposes a novel conception, design, and prototyping of a precast building envelope to be prefabricated with extrusion-based 3D concrete printing (3DCP). The new design and conception aim to fully exploit the potential of 3D printing for prefabricated components, especially in terms of dry assembly, speed of implementation, reusability, recyclability, modularity, versatility, adaptability, and sustainability. Beyond the novel conceptual design of precast elements, the research investigated the 3D printable cementitious material based on a magnesium potassium phosphate cement (MKPC), which was devised and tested to ensure good performances of the proposed component. Finally, a prototype has been realised in scale with additive manufacturing technology in order to verify the printability and to optimize the extruder path. This study leads us to believe that the combined use of prefabricated systems, construction automation, and innovative materials can decisively improve the construction industry’s sustainability in the future.
Electrochemical, Quantum Calculations and Monte Carlo Simulation Studies of N1,N2-Bis(1-Phenylethylidene) Ethane-1,2-Diamine as a Corrosion Inhibitor for Carbon Steel in a 1.0 M Hydrochloric Acid Solution

N1,N2-Bis(1-Phenylethylidene)ethane-1,2-diamine (PE ED) was tested as a corrosion inhibitor for C-steel in a 1.0 M HCl solution, by u sing potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techni ques. The results showed that PEED is a very good inhibitor, as its inhibition ef ficiency reached 93.8 %, with a concentration of 1.0x10 -3 M, at 298 K. Tafel polarization study revealed that PEED acted as a mixed type inhibitor that obeyed Langmui r adsorption isotherm. The thermodynamic activation parameters for the corrosi on reaction were calculated and discussed. Quantum chemical parameters and Fukui fu nction were obtained by DMol/GGA/PW91/DNP+ level of theory, which was performed using Materials Studiov 8.0 software from Biovia-Accelrys. Monte Carlo simulation was implemented to search for the equilibrium configurations of the PEED/Fe(111) adsorption system, in a 1.0 M hydrochloric acid solution.
Isolating the climate change impacts on air pollution-related-pathologies over Europe – A modelling approach on cases and costs

Abstract. Air pollution has important implications on human health and associated external costs to society, and is closely related to climate change. This contribution tries to assess the impacts of present (1996–2015) and future (2071–2100 under RCP8.5) air pollution on several cardiovascular and respiratory pathologies and to estimate the difference in the costs associated to those health impacts on European population. For that, air quality data from the WRF-Chem regional chemistry/climate modelling system is used, together with some epidemiological information from the European Commission. The methodology considered relies on the EVA exposure-response functions and economic valuations (Brandt et al., 2013a; 2013b). Several hypothesis have been established, in order to strictly isolate the effects of climate change on air pollution and health: constant present-day emission levels and population density in all Europe. In general, the number of cases for the pathologies considered will increase in the future (chronic bronchitis, heart failure, lung cancer, premature deaths), increasing the overall cost associated from 173 billion €/year to over 204 billion €/year at the end of the present century. Premature deaths are the most important problem in the target area in terms of costs (158 billion € per year, increasing by 17 % in the future RCP8.5 2071–2100 projection) and cases (418 700 cases/year, increasing by 94 900 cases/year in the future). The most affected areas are European megacities, the Ruhr Valley and several cities at eastern Europe (e.g. Chisinau, Bucharest). For the RCP8.5 scenario, cases and costs will increase over southern and eastern Europe, while central and northern Europe could benefit by climate change variations (decreasing both cases and costs for the studied pathologies).
Ditertiary phosphines bearing a –N–C–C(O)–N(H)– linker and their corresponding dichloroplatinum(II) complexes

Abstract The preparation of a small library of new –N–C–C(O)–N(H)– modified ditertiary phosphines is reported along with their square-planar dichloroplatinum(II) complexes. All compounds were characterized by 31P{1H} and 1H NMR spectroscopy, FT–IR spectroscopy and elemental analysis. The single crystal X-ray structures of four PtII complexes have been determined. Intra- (N–H···N) and intermolecular (N–H···N) hydrogen bonding is principally observed. Graphical Abstract