Miracle-dz/UniFAR-FTUs huggingface dataset:
UNDERSTANDING FORCES THAT CONTRIBUTE TO PROTEIN STABILITY: APPLICATION FOR INCREASING PROTEIN STABILITY

Understanding Forces That Contribute to Protein Stability: Application for Increasing Protein Stability. (May 2009) Hailong Fu, B.S., University of Science and Technology of China Co-Chairs of Advisory Committee: Dr. J. Martin Scholtz Dr. C. Nick Pace The aim of this study is to further our understanding of the forces that contribute to protein stability and to investigate how site-directed mutagenesis might be used for increasing protein stability. Eleven proteins ranging from 36 to 370 residues have been studied here. A 36-residue VHP and a 337-residue VlsE were used as model systems for studying the contribution of the hydrophobic effect on protein stability. Mutations were made in both proteins which replaced bulky hydrophobic side chains with smaller ones. All variants were less stable than their wild-type proteins. For VHP, the destabilizing effects of mutations were smaller when compared with similar mutations reported in the literature. For VlsE, a similarity was observed. This different behavior was investigated and reconciled by the difference in hydrophobicity and cavity modeling for both proteins. Therefore, the stabilizing mechanism of the hydrophobic effect appears to be similar for both proteins. Eight proteins were used as model systems for studying the effects of mutating non-proline and non-glycine residues to statistically favored proline and glycine residues in β-turns. The results suggest that proline mutations generally increase protein stability,
First principles study of the adsorption of MgO molecules on a clean Fe(001) surface

The adsorption of MgO molecules on a Fe(001) surface was studied using density functional theory (DFT) and projector augmented wave methods. The energetically most favored configurations for different adsorption sites considered were identified. The most preferable adsorption geometry is when the MgO molecules are parallel to the surface, with Mg in the interstitial site and O in on-top of the Fe atom. During the adsorption of subsequent MgO molecules in this geometry, a sharp, non-oxidized interface is formed between the MgO adlayer and Fe(001) surface. The adsorption of MgO perpendicular to the surface, with oxygen incorporated in the topmost Fe layer is less probable, but may lead to the formation of the FeO layer when stabilized with an excess of oxygen atoms. Structural, electronic and magnetic properties of both interface types were examined for the MgO coverage from 1/9 to 1 monolayer (ML). Electronic and magnetic properties are sensitive to the MgO coverage. For lower coverage of MgO, clear hybridization between the Fe 3d and O 2p states is shown. The average magnetic moment of the surface Fe atoms is reduced with coverage, achieving 2.78 $\mu_{\rm B}$ for 1 ML of MgO.
Fourier Convolution Operation on Metasurface-Based Hologram in Microwave Region

In this paper, a 0. 1λ0-thick 1-bit coding metasurface is proposed to achieve a polarization-insensitive hologram under oblique incidence, utilizing compact ground-backed patch unit cells. Fourier convolution theory in a digital signal processing system is added to the hologram calculation of the improved weighted Gerchberg–Saxton (GSW) algorithm to achieve control of the scattered pattern in the microwave region. As a proof of concept, a prototype operating at 15 GHz is designed to verify the validity of our proposed approach. The measured performances show good imaging quality under different incident polarizations, providing potential applications in imaging processing and information storage.
Consumption of jelly dessert containing porang (Amorphophallus oncophyllus) glucomannan and inulin along with low-calorie diet contributes to glycemic control of obese adults: a randomized clinical trial

Utami, N.N. , Lestari, L.A. , Nurliyani and Harmayani, E. Postgraduate Program of Food Science and Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No.1, Bulaksumur, 55281 Yogyakarta, Indonesia Department of Health Nutrition, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Jl. Farmako Sekip Utara, 55281 Yogyakarta, Indonesia Department of Animal Product Technology, Faculty of Animal Science, Universitas Gadjah Mada, Jl. Fauna No. 3, Bulaksumur, 55281 Yogyakarta, Indonesia Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Universitas Gadjah Mada, Jl. Flora No.1, Bulaksumur, 55281 Yogyakarta, Indonesia
Virtual Approach to the Comparative Analysis of Biomaterials Used in Endodontic Treatment

The importance of endodontics is presented within our own concept of Dentistry Sustainable Development (DSD) consisting of three inseparable elements; i.e., Advanced Interventionist Dentistry 4.0 (AID 4.0), Global Dental Prevention (GDP), and the Dentistry Safety System (DSS) as a polemic, with the hypothesis of the need to abandon interventionist dentistry in favour of the domination of dental prevention. In view of the numerous systemic complications of caries that affect 3−5 billion people globally, endodontic treatment effectively counteracts them. Regardless of this, the prevention of oral diseases should be developed very widely, and in many countries dental care should reach the poorest sections of society. The materials and methods of clinical management in endodontic procedures are characterized. The progress in the field of filling materials and techniques for the development and obturation of root canals is presented. The endodontics market is forecast to reach USD 2.1 billion in 2026, with a CAGR of 4.1%. The most widely used and recognized material for filling root canals is gutta-percha, recognized as the “gold standard”. An alternative is a synthetic thermoplastic filler material based on polyester materials, known mainly under the trade name Resilon. There are still sceptical opinions about the need to replace gutta-percha with this synthetic material, and many dentists still believe that this material cannot compete with gutta-percha. The results of studies carried out so far do not allow for the formulation of a substantively and ethically unambiguous view that gutta-percha should be replaced with another material. There is still insufficient clinical evidence to formulate firm opinions in this regard. In essence, materials and technologies used in endodontics do not differ from other groups of materials, which justifies using material engineering methodology for their research. Therefore, a detailed methodological approach is presented to objectify the assessment of endodontic treatment. Theoretical analysis was carried out using the methods of procedural benchmarking and comparative analysis with the use of contextual matrices to virtually optimize the selection of materials, techniques for the development and obturation of root canals, and methods for assessing the effectiveness of filling, which methods are usually used, e.g., in management science, and especially in foresight research as part of knowledge management. The results of these analyses are presented in the form of appropriate context matrices. The full usefulness of the research on the effectiveness and tightness of root canal filling using scanning electron microscopy is indicated. The analysis results are a practical application of the so-called “digital twins” approach concerning the virtual comparative analysis of biomaterials used in endodontic treatment.
How Should E-Commerce Platforms Subsidize Retailers with Logistics Constraints during an Epidemic Scenario? Considering Power Structure and Altruistic Preference

To maintain the sustainable development of a platform’s economy, e-commerce platforms put forward various subsidy programs to retailers selling on them during COVID-19. This paper investigates an e-commerce platform’s decision on subsidizing a retailer selling on it with logistics constraints during an epidemic scenario, with a focus on the role of power structure and altruistic preference. By constructing two Stackelberg game models, the research obtains the optimal subsidy under two power structures (i.e., the dominant platform and the weaker platform), respectively. The comparison between them shows that the conditions of the dominant platform giving subsidies (both altruistic preference and logistics constraints should be higher enough) are stricter than the weaker platform. Considering the same altruistic preference and logistics constraints, the optimal subsidy provided by the weaker platform should always be not less than the dominant platform. However, the weaker platform, surprisingly, can get more utility by lowering its altruistic preference voluntarily when the commission fee is low. No matter what the power structure is, the optimal subsidy increases with the logistics service coefficient and altruistic preference, and the dominant member’s profit/utility is not less than the weaker one, which confirms “the first mover advantage”. Finally, more managerial implications to the platform-retailer systems are discussed.
Thermophysical properties of laboratory-prepared corn/wheat dried distillers grains and dried distillers solubles dehydrated with superheated steam and hot air

ABSTRACT The objective of this study was to dry–wet distillers grains and centrifuged solubles and to examine the effect of two different drying media, superheated steam and hot air, at different drying temperatures (110, 130, and 160°C), moisture contents (5–30% wb), and percentages of solubles’ presence (0 or 100%) on some thermophysical properties of laboratory-prepared corn/wheat dried distillers co-products, including geometric mean diameter (dg), particle density (ρp), bulk density (ρb), bulk porosity (ϵb), specific heat (C), effective thermal diffusivity (αeff), and bulk thermal conductivity (λb). The values of dg of corn/wheat dried distillers co-products ranged from 0.358 ± 0.001 to 0.449 ± 0.001 mm. Experimental values of ρp, ρb, and ϵb varied from 1171 ± 6 to 1269 ± 3 kg m−3, from 359 ± 7 to 605 ± 5 kg m−3, and from 0.54 ± 0.01 to 0.71 ± 0.01 kg m−3, respectively. The values of αeff were between 0.58 × 10−7 and 0.93 × 10−7 m2 s−1. The calculated values of C ranged from 1887 ± 11 to 2599 ± 19 J kg−1 K−1, and the values of λb of corn/wheat dried distillers co-products ranged from 0.06 ± 0.01 to 0.09 ± 0.01 W m−1 K−1. Multiple linear regression prediction models were developed to predict the changes in dg, ρp, ρb, ϵb, C, αeff, and λb of laboratory-prepared corn/wheat dried distillers co-products with different operational factors.
Single-level approach to estimate origin-destination matrix: exploiting turning proportions and partial OD flows

ABSTRACT This research proposes a novel single-level approach to traffic counts-based OD estimation using observed turning proportions and partial OD flows. The key idea is to relax the need for explicit assignment-based bi-level models and exploit the observations from big traffic data. The observed turning proportions are used to estimate traffic counts; and the structural knowledge of partial OD flows is used to improve the quality of OD estimates. Numerical experiments considering different spatial coverage of partial OD from Bluetooth are conducted on two networks. The study findings indicated that the quality of estimates improve with higher percentage of partial OD information. The proposed approach is computationally faster and yielded slightly better results than the traditional bi-level. The methodology is not limited to data from Bluetooth but adaptive with other sources such as GPS, mobile phone, and travel surveys that can provide turning proportions and/or partial OD flows.
Comparative Study of the Silver Nanoparticle Synthesis Ability and Antibacterial Activity of the Piper Betle L. and Piper Sarmentosum Roxb. Extracts

Piper betle (P. betle) and Piper sarmentosum (P. sarmentosum) are the two members of the Piper genus, have been reported to be rich in phytochemicals and essential oils, which showed strong reducing power, antibacterial, and antifungal activities. P. betle recently has been studied and applied in several commercial products in the antimicrobial respect, meanwhile its relatives, P. sarmentosum has been lesser-known in this field. In this study, the two Piper species—P. betle and P. sarmentosum were studied to compare their ability in silver nanoparticle synthesis and efficacy in antibacterial activity. P. betle and P. sarmentosum were extracted by distilled water at different temperatures and times. Subsequently, their total reducing capacity was determined by DPPH scavenging and Folin-Ciocalteu assays to choose the appropriate extraction conditions. The silver nanoparticle solutions prepared by the extracts of P. betle (Pb.ext) and P. sarmentosum (Ps.ext) were characterized by Dynamic light scattering (DLS), Zeta potential, UV-vis, and Fourier-transform infrared (FTIR) measurements. Finally, the antibacterial activity of the synthesized silver nanoparticle solutions was tested against Escherichia coli using the agar diffusion well–variant method. The Pb.ext showed stronger reducing power with higher total polyphenol content (~125 mg GAE/mL extract) and better DPPH activity (IC50~1.45%). Both the green synthesized silver nanoparticle solutions (Pb.AgNP and Ps.AgNP) performed significantly stronger antibacterial activity on Escherichia coli compared to their initial extracts. Antibacterial tests revealed that Ps.AgNP showed remarkably better growth inhibition activity as compared to Pb.AgNP. This study would contribute useful and important information to the development of antibacterial products based on green synthesized silver nanoparticles fabricated by the extracts of P. betle and P. sarmentosum.
LOCAL GOVERNMENT INNOVATIONS IN THE COVID-19 PANDEMIC: Public Perceptions of the Implementation of the Behambinan Local e-Commerce Application in Samarinda City

In this study, the authors looked at local government innovations that focused on the Samarinda City Government in the midst of the Covid-19 pandemic. The focus of this research is on people's perceptions of local e-commerce applications which are the innovations of the Samarinda City Government in Handling Covid-19. This research is qualitative research using a qualitative descriptive approach. The data used in this study are premiere data obtained through online surveys and the play.google. com website as support. In addition, the author also made observations on the Behambinan application to obtain more in-depth data. The results showed that only 24 percent of respondents knew about the Behambinan e-commerce application. This is because the socialization carried out by the Samarinda City Government is not optimal. The lack of socialization affects people to prefer e-commerce that is familiar in society. In addition, the local e-commerce application Behambinan is not only used as innovation during a pandemic, but its realization must touch and have an impact on society.
The Impacts of Climate and Wildfire on Ecosystem Gross Primary Productivity in Alaska

The increase in wildfire occurrence and severity seen over the past decades in the boreal and Arctic biomes is expected to continue in the future in response to rapid climate change in this region. Recent studies documented positive trends in gross primary productivity (GPP) for Arctic boreal biomes driven by warming, but it is unclear how GPP trends are affected by wildfires. Here, we used satellite vegetation observations and environmental data with a diagnostic GPP model to analyze recovery from large fires in Alaska over the period 2000–2019. We confirmed earlier findings that warmer‐than‐average years provide favorable climate conditions for vegetation growth, leading to a GPP increase of 1 Tg C yr−1, contributed mainly from enhanced productivity in the early growing season. However, higher temperatures increase the risk of wildfire occurrence leading to direct carbon loss over a period of 1–3 years. While mortality related to severe wildfires reduce ecosystem productivity, post‐fire productivity in moderately burned areas shows a significant positive trend. The rapid GPP recovery following fires reported here might be favorable for maintaining the region's net carbon sink, but wildfires can indirectly promote the release of long‐term stored carbon in the permafrost. With the projected increase in severity and frequency of wildfires in the future, we expect a reduction of GPP and therefore amplification of climate warming in this region.
Dispositions that matter: Investigating criminalized women’s resettlement through their (trans)carceral habitus

Whether prisoner resettlement is framed in terms of public health, safety, economic prudence, recidivism, social justice, or humanitarianism, it is difficult to overstate its importance. This article investigates women’s experiences exiting prison in Canada to deepen understandings of post-carceral trajectories and their implications. It combines feminist work on transcarceration and Bourdieusian theory with qualitative research undertaken in Canada to propose the (trans)carceral habitus as a theoretical innovation. This research illuminates the continuity of criminalized women’s marginalization before and beyond their imprisonment, the embodied nature of these experiences, and the adaptive dispositions that they have demonstrated and depended on throughout their lives. In doing so, this article extends criminological work on carceral habitus which has rarely considered the experiences of women. Implications for resettlement are discussed by tracing the impact of criminalized women’s (trans)carceral habitus (i.e. distrust, skepticism, vigilance about their environments and relationships) on their willingness to access support and services offered by resettlement organizations.
AC vs DC Distribution Efficiency: Are we on the Right Path?

The concept of DC power distribution has gained interest within the research community in the past years; especially due to rapid prevalence of solar PVs as a tool for distributed generation in DC microgrids. Various efficiency analyses have been presented for the DC distribution paradigm, in comparison to the AC counterpart, considering a variety of scenarios. However, even after a number of such comparative efficiency studies, there seems to be a disparity in the results of research efforts - wherein a definite verdict is still unavailable: 'Is DC distribution a more efficient choice as compared to the conventional AC system? ' A final verdict is absent primarily due to conflicting results. In this regard, system modeling and the assumptions made in different studies play a significant role in affecting the results of the study. The current paper is an attempt to critically observe the modeling and assumptions used in the efficiency studies related to the DC distribution system. Several research efforts will be analyzed for their approach towards the system upon which they have performed efficiency studies. Subsequently, the paper aims to propose a model that may alleviate the shortcomings in earlier research efforts and be able to give a definite verdict regarding the comparative efficiency of DC and AC networks for residential power distribution.
Entrepreneurial intentions among students of sultan Qaboos university

The purpose of the study is to investigate the entrepreneurial intentions among students of Sultan Qaboos University. Then, to determine if entrepreneurial intentions differ according to students’ demographics variables. The study used a questionnaire to collect data as a quantitative methodology. The sample of study included 328 students’ that randomly selected. The results of study revealed that entrepreneurial intentions among students at SQU in general with level of moderate, entrepreneurial intentions of male students higher than female, the entrepreneurial intentions among senior higher than junior, sophomore and freshman. In time of joblessness all institutions of learning from primary to university should involve entrepreneurial education in their curriculum.
Optimization of Ultrasonic Extraction Procedure and Analysis of the Chemical Constituents in Volatile Oil from the Leaves of Michelia chapensis Dandy

Michelia chapensis Dandy has antioxidation activity.Ultrasonic extraction(UE) was adapted to extract the volatile oil from the leaves of M.chapensis. Under the optimized extraction condition,the leaves of M.chapensis was extracted with 10 times the mass of n-pentane/diethyl ether(1∶2 by volume) for 30 min to yield 2.48% volatile oil.The constituents of essential oil were analyzed by capillary GC-MS and elucidated based on the standard mass spectral data.42 kinds of volatile components were identified,amounting to 88.66% of the total peak area.The main constituents are germacrene A(10.53%),(E,E)-farnesol(7.53%),β-caryophyllene(6.44%),α-bisabolol(6.16%),β-elemol(6.14%),curzerene(4.28%),longiverbenone(3.50%),α-cubebene(3.25%) and γ-cadinene(3.23%).
Dietary acid load in a group of kidney transplantation candidates

Objective: The objective of the study was to estimate and analyze the Potential Renal Acid Load (PRAL) of the diet in patients maintenance hemodialysis who are candidates for transplantation. Methodology: A cross-sectional study was conducted. The sample was separated in terciles of the PRAL. For the association between the PRAL and the independent variables, non-adjusted multinomial logistic regression and adjusted by potential confounders were implemented. It was assumed a p< 0,05 for statistical significance. Results: It was noticed that protein (g), the protein /kg of weight (g/kg), % of animal and vegetal protein, the phosphorus (mg), the lipid (g), and the carbohydrate (g) showed differences between the terciles (p<0,05). In regression, the greatest consumption of protein (g), protein g/kg of weight (g/kg), % of animal protein and lipid (g) was associated with the tercile 3 to tercile 1, whereas the greatest consumption of carbohydrate and % vegetal protein showed a protective effect. Conclusion: The results show an association between the PRAL and the protein consumption with the difference between the sources. It was not found an association between PRAL and the variables of nutritional status.
Analytical Solution of a Non-isothermal Flow in Cylindrical Geometry

DOI: 10.9734/ARJOM/2021/v17i330283 Editor(s): (1) Danilo Costarelli, University of Perugia,Italy. Reviewers: (1) Atul Kumar Ray, Institute of Technical Education and Research (ITER), India. (2) Juan Luis Mata-Machuca, Instituto Politecnico Nacional, Mexico. Complete Peer review History: http://www.sdiarticle4. com/review-history/66823 Received 05 February 2021 Accepted 11 April 2021 Published 22 May 2021 __________________________________________________________________________________ Abstract
DESCRIBING A SYSTEMATIC REFLECTION FOR PRE-SERVICE TEACHERS’ PROFESSIONAL IDENTITY: A CASE STUDY

To fill the gap and add literature on systematic reflections in the area of teacher identity developments, this research, which is a part of a larger case study, described how reflection class followed by pre-service teachers of English language in a teacher development program in Indonesia (PPG Pra-jabatan) was conducted. Using a single case study with embedded design and multiple data sources (observations, interviews, and document analysis), this research found that in its effort to help pre-service teachers’ identity development, the reflection class followed a certain procedure that comprises of two phases (i.e. reflection phase and publication preparation phase). In addition, this research also found some protocols that were adhered by the reflection class (i.e. involving social reflection, providing a safe and secure learning environment, feedback provision to the reflections, and giving appropriate prompts). This research recommends the teacher education and teacher professional development programs give more attention to how reflection is conducted. In particular, it is suggested that some protocols of conducting a good reflection are considered so that the pre-service teachers can make the most of the reflective activities.