bluuebunny/crossref_metadata_2025 huggingface dataset:
PEMAHAMAN MENGENAI DIET GLUTEN FREE CASEIN FREE (GFCF) SERTA PENERAPANNYA PADA ANAK AUTIS TINGKAT SEKOLAH DASAR DI SLB C YAKUT PURWOKERTO
Authors: Fatma Yukika , Winarsi Hery , Purnamasari Dyah Umiyarni
Published: January 2018

ABSTRACT

The objective of this study was to access an understanding about Gluten-Free Casein-free Diet (GFCF) and its application in autism children in special need school C Yakut Purwokerto. This study uses qualitative research methods, descriptive depth interviews with 6 key informants and 11 informants support. The results showed that the mother initially did not understand and know about the GFCF diet. After got information from therapy, physician, psychologist and school teacher, they understanding of GFCF diet with is proved by mothers already know what foods must be limited. But the mother has not been able to implement a GFCF diet in everyday life as evidenced by the child is still often eat foods made from flour and milk. This is also evidenced in the form Food Frequency Quetionnaire Qulitative. Mother's level of understanding about the GFCF diet has been good, but from the 6 main informant could not do GFCF diet properly and strictly.

Keywords: Autism, Diet Gluten Free Casein Free, Flour and milk

 

ABSTRAK

 

Sekitar 60% penyandang autis mempunyai gangguan sistem pencernaan akibat alergi makanan. Gangguan sistem pencernaan ini mengakibatkan terjadinya kebocoran usus (Leaky Gut). Dampak leaky gut pada autis menyebabkan produksi hormon sekretin terhambat. Sebagai akibat, protein susu sapi (casein) dan gandum (gluten) tidak dapat dicerna dengan sempurna, karena protein tersebut tidak berubah menjadi asam amino tetapi menjadi peptida yang seharusnya dibuang lewat urin, akan tetapi pada anak autis peptida ini diserap kembali oleh tubuh dan masuk ke otak dan diubah oleh reseptor opioid menjadi morfin. Untuk itu anak autis harus membatasi asupan makanan dari gluten dan kasein, agar tidak membuat anak hiperaktif dan tantrum. Tujuan penelitian ini adalah mengetahui gambaran pemahaman ibu mengenai diet GFCF serta sejauh mana ibu menerapkan diet tersebut pada anaknya. Penelitian ini menggunakan metode penelitian kualitatif, jenis deskriptif dengan wawancara mendalam kepada 6 informan utama dan 11 informan pendukung. Hasil menunjukkan bahwa ibu pada awalnya tidak memahami dan mengetahui mengenai diet GFCF. Setelah mendapatkan informasi dari terapi, dokter, psikolog dan guru sekolah ibu menjadi paham

 

mengenai diet GFCF dengan dibuktikan ibu sudah mengetahui makanan apa saja yang harus dibatasi. Namun ibu belum bisa menerapkan diet GFCF di kehidupan sehari-hari yang dibuktikan dengan anak masih sering mengonsumsi makanan berbahan dasar tepung dan susu. Hal ini juga dibuktikan dalam form Food Frequency Quetionnaire (FFQ) Qulitative. Tingkat pemahaman ibu mengenai diet GFCF sudah baik, namun dari 6 informan utama belum bisa melakukan diet GFCF dengan baik dan secara ketat.

 Kata Kunci : Autis, Diet Gluten Free Casein Free, tepung dan susu
Penambahan Ekstrak Alga Sargassum duplicatum Bory pada Medium Kultur In Vitro terhadap Pertumbuhan seedling Anggrek Vanda tricolor Lindl.
Authors: Adiguna Eko , Dwiati Murni , Kamsinah Kamsinah
Published: January 2018

Vanda tricolor is an orchid species that has many advantages, some of which are due to its beautiful and various flowers of unique shape and size. Propagation of V. tricolor can be performed by in vitro culture.In vitro culture technique needs appropriate medium to support orchid growth. An algae species, Sargassum duplicatum, can be added into the medium, since it contains growth regulating substances, such as auxin and gibberellin, which are useful for seedling growth. This study aims to know the effect of S. duplicatum application into in vitro culture medium of V. tricolor on the seedling growth and to know the best application of the algaein increasing seedling growth. An experimental method was arranged in a Completely Randomized Design (CRD). The treatments were S. duplicatum weight of 0, 12, 24, 36, 48 and 60 g/L replicated three times respectively. The variable examined was seedling growth with parameters comprising day of new leaf emergence, leaf number, leaf length, day of new root emergence, root number, root length and plant height. Data were analyzed using ANOVA or F test with confidence level of 95% and 99%. LSD was carried out when F test showed significant difference. The results reveal that application of S. duplicatum extract has significant effect on the growth of V. tricolor seedling. The best application is of 36 g/L algae weight.
PENGARUH GREEN MARKETING TERHADAP PENGAMBILAN KEPUTUSAN DENGAN GENDER SEBAGAI VARIABEL MODERASI
Authors: Kusnandar Deasy Lestary
Published: January 2018

Penelitian ini bertujuan untuk mengetahui pengaruh green marketing terhadap keputusan pembelian dengan gender sebagai variabel moderasi. Lokasi penelitian ini adalah di Greenhost Boutique hotel yang terletak di Jl. Jl. Gerilya No. 629 Prawirotaman II Brontokusuman Yogyakarta  Penelitian ini merupakan jenis penelitian kuantitatif dengan menggunakan metode survei yang diberikan kepada pengunjung hotel. Kemudian, objek penelitian dalam penelitian ini adalah green product, green price, green place, green promotion dan keputusan pembelian. Penentuan jumlah sampel pada penelitian ini adalah sebanyak 120 responden dengan metode pengambilan sampel yang digunakan adalah menggunakan random sampling. Alat pengukuran dalam penelitian ini menggunakan skala interval 1-7. Responden memberikan jawaban pada rentang jawaban dari sangat tidak setuju hingga sangat setuju. Kemudian, analisis yang digunakan adalah analisis Structural Equation Modelling (SEM). Analisis ini dibantu dengan menggunakan program komputer AMOS 21.

Dari hasil analisis SEM diketahui pengembangan model berbasis teori dalam penelitian ini sebanyak 5 variabel dan 20 indikator. Penyusunan path diagram dan penyusunan persamaan struktural &measurement model bersumber dari pengembangan tiga substruktur penelitian. Matriks input yang digunakan adalah kovarian dan teknik estimasi yang digunakan adalah metode Maximum Likelihood (ML) Estimation, yang telah tersedia dalam program komputer AMOS 21. Pada tahap Confirmatory Factor Analysis (CFA) ada indikator yang dihilangkan yaitu X16. Kemudian, pada uji validitas konstruk yang terdiri dari construct reliability, variance extracted, convergent validity, dan discriminant validity seluruhnya telah terpenuhi. Pada asumsi SEM yang terdiri dari evaluasi normalitas data, outliers, dan multicolinierity&singularity juga telah memenuhi kriteria yang disyaratkan. Dari 8 kriteria indeks kesesuaian model (goodness of fit test) yang dijadikan acuan dalam penelitian ini, yaitu Chi-Square, Probability, CMIN/DF, GFI, AGFI, TLI, CFI, dan RMSEA, terdapat sebanyak delapan kriteria yang masuk kategori baik dan sisanya sebanyak 2 kriteria masuk kategori marginal. Berdasarkan hasil uji hipotesis diketahui: (1) Green Product berpengaruh terhadap keputusan pembelian, (2) Green Price berpengaruh terhadap keputusan pembelian, (3) Green Place berpengaruh terhadap keputusan pembelian, (4) Green Promotion berpengaruh terhadap keputusan pembelian, (5) Gender memoderasi hubungan green product, (6) Gender memoderasi hubungan green price, (7) Gender memoderasi hubungan green place, (8) Gender tidak memoderasi hubungan green promotion.
ANALISIS PERCEIVED ENJOYMENT SEBAGAI VARIABEL ANTISEDEN TECHNOLOGY ACCEPTANCE MODEL
Authors: Sugiarto Meilani
Published: January 2018

Young people was active users of the information technology, especially internet. Even some of them tend to make the internet as a medium of the main support daily activities. These study indicate that internet use among young people, especially college student tend to have a model of its own behavior, making it attractive for further investigation. These study focus on the influence of perceived enjoyment as variables anticedent in the Technology Acceptance Model (TAM). The respondents of these study were college student as internet users in Yogyakarta, the province is considering a student city. These study conducted on 130 respondents. According to the structural analysis with SEM method, shows that perceive enjoyment has a role as anticedent variable on TAM, because those variable has significant effects on variables in technology acceptance model.
VARIATION IN AGGRESSIVENESS AND AFLP AMONG Alternaria solani ISOLATES FROM INDONESIA
Authors: Chaerani Chaerani , Kardin M. Kosim , Suhardi Suhardi , Sofiari Eri , Van Ginkel Ria V. , Groenwolt Remmelt , Voorrips Roeland E.
Published: January 2018

Alternaria solani is a necrotroph fungus that causes three-phased diseases in tomato. Management of the pathogen by using resistant cultivars requires knowledge on the aggressiveness and genetic diversity of the fungus. The aims of this study were to isolate A. solani from major tomato and potato producing areas in Indonesia and to study their aggressiveness and genetic variability. Twenty two A. solani isolates were recovered from early blighted tomato and potato in Central and West Java.  A. alternata was also isolated from tomato leaves in West Java and North Sumatra, indicating that early blight in Indonesia may be caused by more than one Alternaria species. Resistance tests of four tomato genotypes to selected A. solani isolates revealed that local isolates were more aggressive in inciting early blight and stem lesion than an imported isolate from USA. This implies that introduced breeding materials must be tested to local isolates to obtain effective resistance genes. Cluster analysis based on amplified fragment length polymorphism (AFLP) obtained from EcoRI+AG and MseI+C primer amplification separated 28 local and Taiwan isolates from the US isolate, which was coincided with aggressiveness separation between the local isolates and the US isolate. Three clusters of AFLP genotypes which did not associate with geographic origin were observed among tropical isolates. The low genetic diversity among the Indonesian isolates suggests clonal population structure with wide distribution. Successful local tomato breeding requires the availability of local A. solani collection with well-characterized aggressiveness level and molecular diversity to obtain effective resistance genes.
SALINITY TOLERANCE OF SEVERAL RICE GENOTYPES AT SEEDLING STAGE
Authors: Safitri Heni , Purwoko Bambang Sapta , Dewi Iswari Saraswati , Ardie Sintho Wahyuning
Published: January 2018

Salinity is one of the most serious problems in rice cultivation. Salinity drastically reduced plant growth and yield, especially at seedling stage. Several rice genotypes have been produced, but their tolerance to salinity has not yet been evaluated. The study aimed to evaluate salinity tolerance of rice genotypes at seedling stage. The glasshouse experiment was conducted at Cimanggu Experimental Station, Bogor, from April to May 2013. Thirteen rice genotypes and two check varieties, namely Pokkali (salt tolerant) and IR29 (salt sensitive) were tested at seedling stage. The experiment was arranged in a randomized complete block design with three replications and two factors, namely the levels of NaCl (0 and 120 mM) and 13 genotypes of rice. Rice seedlings were grown in the nutrient culture (hydroponic) supplemented with NaCl at different levels. The growth and salinity injury levels of the genotypes were recorded periodically. The results showed that salinity level of 120 mM NaCl reduced seedling growth of all rice genotypes, but the tolerant ones were survived after 14 days or until the sensitive check variety died. Based on the visual injury symptoms on the leaves, five genotypes, i.e. Dendang, Inpara 5, Inpari 29, IR77674-3B-8-2-2-14-4-AJY2, and IR81493-BBB-6-B- 2-1-2 were tolerant to 120 mM salinity level, while Inpara 4 was comparable to salt sensitive IR29. Hence, Inpara 4 could be used as a salinity sensitive genotype for future research of testing tolerant variety. Further evaluation is needed to confirm their salinity tolerance under field conditions. 
RELEASE OF SILICON FROM SILICATE MATERIALS AND ITS UPTAKE BY RICE PLANT
Authors: Anggria Linca , Husnain Husnain , Sato Kuniaki , Masunaga Tsugiyuki Masunaga
Published: January 2018

Plants absorb silicon (Si) from soil solution in the form of monosilicic acid, also called orthosilicic acid (H4SiO4). Application of organic and inorganic materials containing readily soluble Si can increase Si supply in the soil and  its uptake by plant. The study aimed to evaluate the release of Si from organic and inorganic material sources and its uptake by rice plant. The released phosphorus (P) from those materials was also evaluated. The inorganic materials evaluated included fly ash, steel slag, silica gel and Japanese silica gel (JSG), while the organic materials consisted of rice husk ash (RHA), rice husk burnt (RHB), media of mushroom (MM), cacao shell biochar (cacao SB) and rice straw compost (RSC). The dynamics of Si and P were observed by periodical samplings at 7, 17, 24 and 34 days after transplanting (DAT).  Tiller number and plant height were measured at 16, 21 and 36 DAT.  The results showed that Si concentration in solution derived from inorganic material was highest for JSG followed by silica gel (1.107 and 0.806 mmol L-1, respectively). The release of Si from organic material was higher for RHB and RHA (0.618 and 0.539 mmol L-1, respectively).  Cacao SB, silica gel, JSG and RHB significantly increased plant height at 36 DAT. Meanwhile, Si materials did not significantly affect the tiller number. Of the materials used, steel slag and JSG significantly affected Si uptake by rice plant.
Transient Cuttings Transport with Foam in Horizontal Wells-A Numerical Simulation Study for Applications in Depleted Reservoirs
Authors: Prasun Samir , Ghalambor Ali
Published: January 2018

A good knowledge of foam hydraulics and cuttings transport (hole cleaning) is essential for successful applications of foam drilling technology in horizontal wells. Estimating local fluid velocity in a partially blocked eccentric annulus (due to cuttings) is a challenge; so, a new analytical method of calculating local stress and velocity (near cuttings-bed in annulus) in an eccentric annular flow is derived which makes it possible to estimate the bed height for foam drilling in horizontal wells. Therefore, a new equation for local velocity (critical velocity) to initiate particle movement is used in order to predict the bed-height profile in a build-up or horizontal section of wellbore. This investigation also focuses on understanding the effects of drilling parameters on bed height and cuttings concentration.

A new transient wellbore hydraulics and cuttings transport model has been developed using the finite difference method of continuity equations for foam and cuttings. In order to predict the cuttings bed formation in horizontal wells, a mechanistic hole-cleaning model consisting of two layers has been utilized. The model is based on torque balance for a particle on the surface of a bed. In addition, a new model has been formulated for the local shear stress by modeling the eccentric annular flow as the infinite number of concentric annuli with variable outer radius. Similarly, using the narrow slot-approximation technique, a local velocity profile has been determined analytically in the eccentric annulus to be applied in the torque balance equations. Subsequently, model predictions of bed height were compared with published experimental data and the model is fine-tuned to minimize discrepancies.

Results show the cuttings bed front transitions through the annulus along the build-up and horizontal sections. Model predictions showed a good match with experimental results for concentric horizontal annulus except at higher polymer concentrations (greater than 0.25%). The simulation results show that bed height and cuttings concentration are quite sensitive to the changes in surface foam injection rates and back-pressure, thereby can be best optimized by properly adjusting these input parameters. The results also suggest that hole-cleaning is a function of inclination. The bed height increases with increase in inclination angle until a critical angle of 90°-φ (φ is the angle of repose) after which, it reduces.
Microbial Remediation of Guar-Based Fracturing Fluid Damage
Authors: Ma Xin , Lei Guanglun , Wang Zhihui , Da Qi'an , Song Ping , Zhang Xin , Yao Chuanjin
Published: January 2018

As the development of unconventional oil and gas reservoirs, hydraulic fracturing has become a critical component. However, formation damage is always impeding the application of hydraulic fracturing. A remediation method is presented that microbes can be used to remove the guar-based fracturing fluid damage. Laboratory experiment results show the feasibility and effectiveness of this method in different reservoir temperature.

This approach is based on the bio-degradation of guar gum. Guar gum degrading bacteria was isolated from the well water and identified through 16S rDNA. Apparent viscosity and average molecular weight were employed to measure the bio-degradation. The mechanism of microbial remediation of guar-based fracturing fluid damage was proved by the biodegradation of filter cake through measuring the thickness of filter cake on the filter paper. In addition, the core-flood simulation experiment was also conducted to verify the feasibility of this method. The experimental method is described in detail to permit readers to replicate all results.

Three guar gum degrading bacterial strains, Bacillus aerius, Anoxybacillus rupiensis and Geobacillusstearo thermophiles, were isolated and identified. Physiological-biochemical characteristics showed that the bacteria can grow in the oil reservoir with high temperature (50~70°C). In addition, the apparent viscosity and the average molecular weight of guar gum decreased significantly after bio-degradation. It means that the fluidity of guar gum residue rises. Bacillus aerius has the fastest degradation ability from 86.5 mPa·s to about 3.0 mPa·s for 48 h with the decrease of average molecular weight from 5.19×105 to about 4.53×104. Furtheremore, the thickness of filter cake was reduced by average 0.46 mm showing the signifiacant filter cake dissolving ability. Additionally, the permeability of sand-pack columns was restored up to 93.71% in laboratory simulation experiments. In conclusion, it is believed that the microbial treatment seems to be a new approach for remediation of guar-based fracturing fluid damage and has great potential in unconventional oil and gas development.

The novelty of the new method is in the ability to remove the polymeric damage using the bacteria when the formation was damaged after hydraulic fracturing.
Dispersion-Based Paraffin Inhibitors Adsorbed in Solid Substrates Affords Long Term Flow Assurance
Authors: DeBenedictis Frances , Bhaduri Sumit
Published: January 2018

Paraffin deposition, resulting in productivity loss of newly completed wells, is a major source of formation damage and is operationally and financially critical to address with a proven solution. Paraffin inhibitors included in the stimulation treatment have limited long term success due to cost and limitations on the amount of inhibitor that can be added to provide the desired longevity. A dispersion based paraffin inhibitor adsorbed on a high surface area substrate was developed which is compatible with fracturing fluids and affords a long term, cost effective solution to the paraffin deposition problem.

Laboratory studies were conducted under simulated field conditions, and the effect of inhibitor on oil properties (pour point, cold finger) as the oil is treated in the proppant pack with adsorbed paraffin inhibitor was investigated. Oils with different paraffinic issues were analyzed in this study. The studies estimate the longevity of treatment and the improvement expected using this treatment for field applications using flow-through column tests.

Traditional paraffin inhibitor treatments have provided limited long term performance in wells with paraffin issues. Little protection is provided beyond the perforations when continuously treating into the production fluids through capillary injectors. Additionally, squeeze treatments designed to increase the chemical's contact area by forcing the chemical treatments deeper into the reservoir give limited longevity in high paraffinic wells. In the current study, a novel treatment results in greater amounts of inhibitor placed downhole for prolonged treatment. A combination treatment was recommended whereby a compatible submicron-sized paraffin inhibitor dispersion is added to the fracturing fluid. In addition, a dispersion based paraffin inhibitor was adsorbed onto a proppant-like substrate that can be mixed into the proppant and delivered deep into the formation with fracturing or refracturing treatments, providing enhanced flow assurance management.
Well Assessment and Evaluation by Decomposition of Energy Dissipation
Authors: Chu Lifu , Ye Peng
Published: January 2018

Successful operation of an offshore field relies heavily on a surveillance program to monitor and describe the dynamic status of the wells. Conventionally, such programs consist of a series of shut-in and wrap-up procedures to collect essential buildup/drawdown pressures for inferring the near wellbore status, drainage volume, well productivity index (PI), etc.

Such surveillance programs are complex and expensive. They require long well shut-in periods, which may be infeasible both economically and operationally in certain scenarios. Although a long shut- in may be prohibitive, pressure buildup data from planned or unexpected short shut-ins are often available in offshore fields.

This paper presents an innovative methodology to infer the necessary information from short shut-in data. The main theoretical basis for the new method is the decomposition of the energy dissipation during the pseudosteady-state flow period. By decomposing the energy loss into time dependent and time invariant components, the dynamic status of the well(s) can be described using available plh drawdown (the pressure difference between one-hour shut-in pressure and flowing bottomhole pressure). The new method has been successfully used in offshore fields to: Create the evolution of the well skin and well PIsEstimate the well's drainage volumeDetect/confirm aquifer supportPinpoint the well workover/stimulation threshold and timingAssess the work quality of the workover/stimulation

This paper describes the theory and physics behind the methodology and demonstrates its application in an offshore field example.
Improving Well Productivity in North Kuwait Well by Optimizing Radial Drilling Procedures
Authors: Al-Jasmi Ahmad Kh. , Alsabee Ali , Al-Awad Ahmad , Attia Adel , Elsayed Abdou , El-Mougy Ahmed
Published: January 2018

Reservoir management requires continual efforts to identify opportunities for production enhancement. Radial Drilling (RD) technology is a method for production optimization by extending the contact area with reservoir. It utilizes hydraulic jetting energy to create several lateral holes within the zones of interest along different directions.

A candidate cased hole well-A was selected based on sub-normal production from a sandstone reservoir. Three extended laterals holes, at ±300 ft lengths each, are made using the RD technology. Job planning includes core studies, static and rotary jetting test using clean fluid. In order to avoid any possible formation damage during operations, RD job procedures have been optimized by using the different fluids mixtures during jetting, backwash and enlarging the created lateral holes. Jetting fluid used was brine mixed with NH4CL and Mutual Solvent, and followed by 10% HCL regular Acid.

The results showed a significant improvement in well productivity compared with previous well history. The post-treatment production test showed a ±110% gain in oil rate resulting from the improved reservoir deliverability. The dominant factor responsible for the success of this technology is the meticulous planning and testing before job execution. Moreover, it has proven to be an effective solution to bypass the deep damaged area around the sandface, and to improve the production recovery from heavy oil zones. The success of the new Radial Drilling technology with the optimized procedures can be implemented as a best practice in similar wells in north Kuwait fields.

This paper presents the advantages of the Radial Drilling technology in the recovery of bypassed crude oil from existing thin reservoirs, the optimized radial drilling procedures that ensured a clean lateral hole, and the evaluation of the impact compared to the conventional procedures.
The Effect of pH and Mineralogy on the Retention of Polymeric Scale Inhibitors on Carbonate Rocks for Precipitation Squeeze Treatments
Authors: Jarrahian Kh. , Sorbie K. S. , Singleton M. A. , Boak L. S. , Graham A. J.
Published: January 2018

The bulk "apparent adsorption" behavior (Γapp, vs. Cf) of 2 polymeric scale inhibitors (SI), PPCA and PFC, onto carbonate mineral substrates has been studied for initial solution pH values of pH 2, 4 and 6. The 2 carbonate minerals used, calcite and dolomite, are much more chemically reactive than sandstone minerals (e.g. quartz, feldspars, clays etc.) which have already been studied extensively. In nearly all cases, precipitates formed at higher SI concentrations were due to the formation of sparingly soluble SI/Ca complexes. A systematic study has been carried out on the SI/Ca precipitates formed, by applying both ESEM/EDX and particle size analysis (PSA), and this identifies the morphology and the approximate composition of the precipitates.

For PPCA, at all initial solution pH values, regions of pure adsorption (Γ) ([PPCA] <100ppm) and coupled adsorption/ precipitation (Γ/Π) are clearly observed for both calcite and dolomite. PFC at pH = 4 and 6 also showed very similar behavior with a region of pure adsorption (Γ) for [PFC] < 500ppm and a region of coupled adsorption/precipitation (Γ/Π) above this level. However, the PFC/calcite case at pH 2 showed only pure adsorption, while the PFC/dolomite case at pH 2 again showed coupled adsorption/ precipitation at higher PFC concentrations. For both SIs on both carbonate substrates, precipitation is the more dominant mechanism for SI retention than adsorption above a minimum concentration of ~100 – 500 ppm SI. The actual amount of precipitate formed varies from case to case, depending on the specific SI, substrate (calcite/dolomite) and initial pH (pH 2, 4 and 6).

Although the qualitative behavior of both PPCA and PFC was similar on both carbonate substrates, the apparent adsorption of PPCA was higher on calcite than on dolomite; PFC apparent adsorption was higher on dolomite than on calcite. It is discussed in the paper how these observations are related to the reactivity of the different carbonate minerals, the resulting final pH (which affects the dissociation of the SI), Ca-SI binding and the solubility of the resulting complex.
New Single-Phase Retarded Acid System Boosts Production after Acid Fracturing in Kazakhstan
Authors: Abdrazakov Dmitriy , Panga Mohan Kanaka , Daeffler Christopher , Tulebayev Duman
Published: January 2018

The use of conventional acid systems in high-temperature, fast-reactive carbonate reservoirs limits the effectiveness of matrix acidizing and acid fracturing. Therefore, during acid stimulation in such conditions, acids with retarded reaction are usually recommended. Industry-employed retarded acid systems have several significant drawbacks—they either dissolve lower rock volume or have higher friction and are more complex to mix than the standard hydrochloric acid system. The introduction of a new single-phase retarded acid enabled minimizing these drawbacks. The sustained increase in productivity index (PI) after the acid fracturing and matrix acidizing treatments under high-pressure/high-temperature conditions was achieved. The treatments were performed on exploration wells drilled in carbonate oil fields of the pre-Caspian and Mangystau oil-bearing provinces of West Kazakhstan.
Application of Polyelectrolyte Complex Nanoparticles to Increase the Lifetime of Poly Vinyl Sulfonate Scale Inhibitor
Authors: Veisi Masoumeh , Johnson Stephen , Peltier Karen , Berkland Cory , Liang Jenn-Tai , Barati Reza
Published: January 2018

Poly(vinyl sulfonate) (PVS) is an effective scale inhibitor in preventing the formation of barium sulfate. However, the low adsorption of PVS onto the rock results in a short squeeze treatment lifetime in reservoir. The application of nano-sized polyelectrolyte complexes (PECs) to increase the treatment lifetime of PVS is examined in this work.

Positively charged nanoparticles consisting of poly(ethyleneimine) and PVS were prepared. Sand pack studies were performed to quantify the adsorption and release of PEC-entrapped PVS, and the effect of ionic shock on the release of PEC-entrapped PVS was studied. It was found that an increase in the ionic strength of the displacing fluid released the PVS from the nanoparticle structure. Dynamic tube blocking tests showed that PEC-entrapped PVS increases the squeeze treatment lifetime by 22% compared to unentrapped PVS. The results also suggest that ionic shocks improve the release of PVS, prolonging the treatment by 40% compared to unentrapped PVS.
HEART RATE REGULATION IN STUDENTS IN DIFFERENT PERIODS OF TRAINING
Authors: Федоров Александр , Fedorov Alexandr , Зарченко Павел , Zarchenko Pavel , Пономарева Виктория , Ponomareva Viktoriia , Немолочная Нина , Nemolochnaia Nina
Published: January 2018

The article features a study of the peculiarities of heart rate regulation in 46 students in 2 stages of training: the beginning and the end of the academic year. The indices of variation pulsometry were analyzed at rest and in orthostasis, taking into account the type of daily activity. The data analysis has revealed signs of the extinction of the structural trace of longterm adaptation to the learning process in the group during the summer period. It is shown that in the end of academic year, compared with the autumn period, students demonstrate a decrease in sympathetic activity of the nervous system at rest, and the stress response to the study load is more pronounced. It was found out that those students who were examined in the autumn period formed a stable mechanism of vegetative regulation to educational activity and took place at the expense of the lower links of nervous and humoral regulation, with a higher level of functional reserves involved in the formation of successful adaptation to the academic process. It has been revealed that students with different types of daily activity demonstrate adaptation processes with their own specifi at the beginning and the end of the academic year: in individuals with an evening type in the summer period, sympathetic infl were predominantly determined by the central mechanisms of the regulation of the sympathetic adrenal system.
DISTRIBUTION OF BRYOZOANS IN VARIOUS FACIES OF EMSIAN SALAIR FORMATIONS
Authors: Мезенцева Ольга , Mezentseva Olga , Удодов Юрий , Udodov Yurii
Published: January 2018

The article analyzes the facial dissimilarity of bryozoans of the Emsian Stage near the town of Gyr’evsk. The bryozoans associations have been found in all types of facies, except the sand-mudstone one. In the littoral facies (bioclastic limestones with subordinate sand-mud-siltstones rock) the bryozoans are represented by the orders of Trepostomida, Fenestellida, Cryptostomida, Cystoporida, but treposomides predominate (63 % of the total number of species). After the littoral facies turn into the facies of the open lagoon (mudstones with subordinate limestones), only trepostomides are represented in the Emsian section, near the boundary, forming the Briozoan interbeds. Briozoan interbeds consist of the fragments of Neotrematopora salairiensis colonies. The restoration of species and genus diversity in new facies occurs relatively quickly. In comparison with trepostomides, representatives of other orders appear with a large time-lag. Under the conditions of an open lagoon, bryozoans are characterized mainly by branched bifoliate colonies. In the slope facies (bedded limestones), characterized by greater depths and low hydrodynamics, fennestellids dominate (58 % of the total number of species). Trepostomides and cystoporides in these facies are represented by species with thick-branched and massive branched colonies. When the facies of bedded limestones change to sandy-mudstones (the beginning of the regression), the fenestellids also form Briozoan interbeds near the boundary. In the lateral rows of the facies of a single stratigraphic unit, several facial associations of bryozoans are often found. The species of bryozoans characteristic of this stratigraphic level are present in all associations. The unity of the Emsian complex of bryozoans is expressed in the gradual change of their associations upwards the section (three Briozoanbiostratigraphic Zones have been identified).
HYDRO-MORPHOLOGICAL CHARACTERISTICS OF THE MOUNTAIN RIVERS OF THE ORDZHONIKIDZE DISTRICT, REPUBLIC OF KHAKASSIA (THE CASE OF THE PRAVAYA SARALA RIVERHEAD)
Authors: Орешкова Татьяна , Oreshkova Tatiana , Воротилина Наталья , Vorotilina Natalya , Махрова Марина , Makhrova Marina
Published: January 2018

The article gives a brief description of water bodies in the Ordzhonikidze district and describes the hydrography of the Pravaya Sarala river near the village of Priiskovaya. The objects of our study were the small streams that form the Pravaya Sarala. The research involved measurements and calculations of the parameters of the Central and the Lake tributaries. The article features the results of the measurements and their comparison, made with the help of generally accepted methods. The result was that the Lake tributary exceeds the Central one in all respects. Despite the fact that the slope of the Central tributary is greater than that of the Lake tributary, the average fl rate of the former is lower. It may be associated with the shallowness of some in parts of the Central tributary: the roughness and unevenness of the bottom of the riverbed with its boulders slow the movement of the water. According to the mountain rivers classifi the waterways in question refer to the category of small mountain rivers.
Chemometric Analysis for the Classification of some Groups of Drugs with Divergent Pharmacological Activity on the Basis of some Chromatographic and Molecular Modeling Parameters
Authors: Stasiak Jolanta , Koba Marcin , Gackowski Marcin , Baczek Tomasz
Published: January 2018

Aim and Objective:

In this study, chemometric methods as correlation analysis, cluster
analysis (CA), principal component analysis (PCA), and factor analysis (FA) have been used to
reduce the number of chromatographic parameters (logk/logkw) and various (e.g., 0D, 1D, 2D, 3D)
structural descriptors for three different groups of drugs, such as 12 analgesic drugs, 11
cardiovascular drugs and 36 “other” compounds and especially to choose the most important data of
them.

Material and Methods:

All chemometric analyses have been carried out, graphically presented and
also discussed for each group of drugs. At first, compounds’ structural and chromatographic
parameters were correlated. The best results of correlation analysis were as follows: correlation
coefficients like R = 0.93, R = 0.88, R = 0.91 for cardiac medications, analgesic drugs, and 36
“other” compounds, respectively. Next, part of molecular and HPLC experimental data from each
group of drugs were submitted to FA/PCA and CA techniques.

Results:

Almost all results obtained by FA or PCA, and total data variance, from all analyzed
parameters (experimental and calculated) were explained by first two/three factors: 84.28%,
76.38 %, 69.71% for cardiovascular drugs, for analgesic drugs and for 36 “other” compounds,
respectively. Compounds clustering by CA method had similar characteristic as those obtained by
FA/PCA. In our paper, statistical classification of mentioned drugs performed has been widely
characterized and discussed in case of their molecular structure and pharmacological activity.

Conclusion:

Proposed QSAR strategy of reduced number of parameters could be useful starting
point for further statistical analysis as well as support for designing new drugs and predicting their
possible activity.
Multidimensional Analysis of Curved Root Canal Preparation Using Continuous or Reciprocating Nickel-titanium Instruments
Authors: Mamede-Neto Iussif , Borges Álvaro Henrique , Alencar Ana Helena Gonçalves , Duarte Marco Antonio Hungaro , Neto Manoel Damião Sousa , Estrela Carlos
Published: January 2018

Objective:

To evaluate transportation (T) and centering ability (CA) of root canal preparations using continuous or reciprocating nickel-titanium endodontic files.

Materials and Methods:

Ninety-six mesiobuccal root canals of mandibular first and second molars were randomly divided into 6 groups (n=16) according to the rotary file used: 1. ProTaper Next; 2. ProTaper Gold; 3. Mtwo; 4. BioRaCe; 5. WaveOne Gold; 6. Reciproc. Root canals were prepared according to manufacturer’s instructions. Cone beam computed tomography scans were obtained before and after root canal preparation. Measurements were made at six different reference points: 2, 3 and 4 mm from the apex and 2, 3 and 4 mm below furcation in different directions.

Results:

The greatest Mesiodistal (MD) Transportation (T) was found for Reciproc files (p<0.05), and the greatest buccolingual (BL) T, for Reciproc, ProTaper Gold and ProTaper Next files (p<0.05). The greatest Mesiodistal (MD) Centering Ability (CA) was found for BioRaCe files (p<0.05), and the greatest Buccolingual (BL) CA, for BioRaCe and Mtwo files (p<0.05).

Conclusion:

All systems produced root canal transportation. No file system achieved perfect CA of root preparation. Reciproc files had the greatest MD T and BL T. BioRaCe files had the greatest MD CA, whereas BL CA was similar for BioRaCe and Mtwo files.
Meeting the industrial demand of construction engineering graduate competence
Authors: Asrib Ahmad Rifqi , Arfandi Anas
Published: January 2018

The aim of this study is to identify the distribution and relevance of graduate competencies in S1 PTSP Department FT UNM to those in the world of work. This research was conducted for a year. The location of this research was conducted in according with the distribution of graduates. Samples amount 28 respondents. The data collected used questionnaires, interviews and documentation. The result shows that the waiting period of graduate majoring in engineering education buildings PTSP FT UNM within the last 3 years (2013-2015) in getting a job was an average of 4.4 months. Then, the relevance of the work with their educational background according to their expertise was 85.72% while 14.28% are not suitable. Furthermore, the level of relevance of graduates’ technical skills in the field of building engineering was at the level of relevant amount 44.48%, and in the field of education at the level of highly relevant amount 55.00% of the number of observed respondents. The level of employability skills were in the proficient category with the average value about 48.75% of all aspects.
Developing conveyor trainer kit for programmable logic controllers in practical learning
Authors: Sukir Sukir , Soenarto Soenarto , Soeharto Soeharto
Published: January 2018

The research aims: (1) to produce conveyor trainer kit equipped with a monitoring system along with its work performance, (2) to know the appropriateness and effectiveness of the use of conveyor trainer kit and module of PLC practical learning. This study is a development research using ADDIE model based on Branch, RB. The steps of this study are: analysis, designing, developing, implementation, and evaluation. Data collection is conducted through observation, survey, and test by using the instruments: observation sheets, questionnaire, and examination. The data are analyzed descriptively using nonparametric test of difference by Mann Whitney. The finding shows: (1) the product of conveyor trainer kit equipped with monitoring system has good work performance; (2) conveyor trainer kit and the module are very appropriate, and the implementation of conveyor trainer kit and module of PLC practical learning can improve student learning outcomes in cognitive, psychomotor, and affective aspects effectively.
The developing teaching practice model as an effort to improve the quality of mechanical engineering vocational school teachers
Authors: Wiyanto Theodorus , Samani Muchlas , Sugiyono S.
Published: January 2018

This research aims to develop teaching practice program model for mechanical engineering education teacher trainees of State University of Surabaya. This research applied research and development (R & D) design by Borg & Gall in ten steps which are classified into two stages: research and data collection and product development. The research and data collection were conducted by applying qualitative approach through observation, interview, documentation on seven State ‘LPTK’, education office, teacher profession association, teaching practice student, teaching practice supervising lecturer, headmaster, and teacher tutor. The data analysis in this stage was conducted based on the technique developed by Miles and Huberman. Data validity was tested with data triangulation using double sources as comparison. The product development stage included model pre-design making, introductory test, model revision, model test, model revision, field test, and final model revision. First stage model test was conducted in mechanical engineering department with three vocational schools. The second stage model test was conducted in mechanical engineering department with six vocational schools. The last  is dissemination stage in the form of spreading the model yielded from the product development to professionals, authorities, and policy makers. The result at this research is a teaching practice model called “KPrIP2” which consists of four main product components. “K” means partnership between Mechanical Engineering Department of State University of Surabaya and the education office of province/ regency/city in continuous planning, action, and evaluation. “Pr” means pre-teaching practice in which the students do introductory activities in vocational schools to observe and coordinate with the school’s department to determine who will be the teacher tutor and what material/subject to be used in the teaching practice II. “I” means that all pre-teaching practice activities, starting from classroom peer-teaching, laboratory peer-teaching, microteaching, and real teaching in vocational school, are conducted individually and independently. “P2” means that teaching service activities must be supervised by competent/professional advisors, i.e. who have the same pedagogical and major background with the students who do the teaching practice and play role as the supervising lecturer of teaching practice I which is continued to be the advisor in teaching practice II. Teaching practice model “KPrIP2” is claimed to be effective to reach the teaching practice objectives but inefficient in budgeting.
Evaluating the philosophical foundation of 2013 Curriculum
Authors: Mardiana Mardiana , Suyata Pujiati
Published: January 2018

The study was to: (1) identify the interpretation toward the philosophical foundation of 2013 Curriculum; and (2) evaluate the philosophical foundation of 2013 Curriculum. In order to achieve these objectives, the researchers implemented the method of philosophy interpretation, namely a method that might discover an individual’s paradigm through the texts or the articles that he or she composed. Furthermore, in order to evaluate the philosophical foundation of 2013 Curriculum the researchers implemented certain criteria and this effort was supported by the expert interview. The data were analyzed by means of hermeneutic method, namely the presence of a relationship among the three elements namely text, interpreter and reader. The conclusions of the study then were as follows: (1) the interpretation toward the philosophical foundation of 2013 Curriculum contained six points namely: (a) establishing and developing the nation’s attitude and civilization or the nation’s character, (b) developing the curriculum based on the nation’s culture, (c) referring to the fact that education had been a process of developing the learning participants’ potentials, (d) referring to the fact that education had been based on the nation’s culture and experience in the past, (e) referring to the fact that education had been basis of the nation’s life continuity and (f) Referring to the fact that education had been adjusted to the life of the learning participants as an individual, a society member and a citizen; (2) the six philosophical reasons namely: (a) perennialism, (b) essentialism, (c) progressivism, (d) pragmatism, (e) existentialism and (f) reconstructionism; (3) the following evaluation results: (a) the philosophical foundation of 2013 Curriculum based on the interpretation results had provided clear educational objectives and functions, (b) the philosophical foundation of 2013 Curriculum had been in accordance to facts, (c) the philosophical foundation of 2013 Curriculum had been in accordance to experiences, (d) the philosophical foundation of 2013 Curriculum had been in accordance to other religions, (e) the Graduates Competence Standards for the Senior High School students in the 2013 Curriculum had been too high and the learning method of 2013 Curriculum for the Elementary School students had been too high and (f) 2013 Curriculum had simple paradigm and it might be attended by the learning participants easily but such paradigm still demanded teachers’ creativity within the learning process implementation.
A LITERATURE REVIEW ON TEACHER EDUCATION AND COMMUNITY DEVELOPMENT WITH SPECIAL REFERENCE TO INDIA
Authors: Sumi V. S.
Published: January 2018

The present paper attempts to evaluate some research studies carried out in India in the field of teacher education and community development. Relevant researches concerning teacher education and community development was identified by searching the reliable databases. The studies were collected, categorized and analysed. The review highlights the importance of educating the individuals for community development, successful strategies adopted by teachers for community development, various programmes by educationists, Government and organizations for community development, community participation in education, and why community development is important, with all supported research evidences. The evidences from the literature review confirms that community participation is not a panacea for all the barriers in the development but active involvement of the community has facilitated in identifying community specific issues and formulating effective strategies.
CHANGING TRENDS OF AGRICULTURAL DEVELOPMENT AND ITS EFFECT ON ENVIRONMENT OF UTTARAKHAND HILLS(A CHALLENGE)
Authors: Singh Prakash Vir
Published: January 2018

Agricultural development has been sluggish, and has failed to keep pace with population growth. In recent years the yields of major food crops in Uttarakhand have been lower than other South Asian countries and Uttarakhand is now dependent on food imports. Land holding size per family and field sizes has both decreased markedly during recent years. If hill regions are considered independently, all cereal crops yields have stagnated in the last 30 years and gains in production that have been made. Crop productivity in the hills has declined due to land degradation. Agricultural development has been sluggish, and has failed to keep pace with population growth. In recent years the yields of major food crops in Uttarakhand have been lower than other South Asian countries and Uttarakhand is now dependent on food imports. Land holding size per family and field sizes has both decreased markedly during recent years. If hill regions are considered independently, all cereal crops yields have stagnated in the last 30 years and gains in production that have been made. Crop productivity in the hills has declined due to land degradation. Changes in agricultural practices (including changes in crops and crop production, impacts of livestock overgrazing) are having major and far reaching impacts on natural environment.