Miracle-dz/UniFAR-FTUs huggingface dataset:
Nitrogenase of Sesbania Rhizobium Strain ORS571: Purification, Properties and ‘Switch-off’ by Ammonia

Summary: Nitrogenase from the Rhizobium strain ORS571, which forms both root and stem nodules on the tropical plant Sesbania rostrata, was purified from free-living diazotrophically grown organisms. The enzyme complex was resolved into two protein components resembling those obtained from other diazotrophs. Both components were purified to homogeneity as judged by SDS-gel electrophoresis. Component 1, a Mo-Fe protein, had a M r of 219000 and contained 1·2 g-atoms Mo mol-1, 22·5 g-atoms Fe mol-1and 20·5 g-atoms acid-labile S mol-1. It consisted of two types of subunit of M r 56000 and 59000. The specific activity [nmol product formed min-1(mg protein)-1] of component 1, when assayed in the presence of an optimum concentration of component 2 (molar ratio 1:40), was 1250 for acetylene reduction and 1090 for hydrogen evolution. Component 2, an Fe protein, had a M r of 74000 and contained 3·1 g-atoms Fe mol-1and 3·1 g-atoms acid-labile S mol-1. It consisted of a single type of subunit of M r 36000. The specific activity of component 2, when assayed in the presence of an optimum concentration of component 1 (molar ratio 1:1) was 1700 for acetylene reduction and 1305 for hydrogen evolution. Nitrogenase activity of strain ORS571 was subject to ‘switch-off’ when ammonia was added to a N2-fixing culture. This effect was independent of protein synthesis and was reversible. Nitrogenase components 1 and 2 isolated from ‘switched-off’ organisms were purified to homogeneity. Both components had the same mobility on SDS-gels as those isolated from active cultures. ‘Switch-off’ resulted in a decrease in the specific activity of component 2 from 1700 to 280. Component 1 remained fully active. The addition of Mn2+to a crude extract containing inactivated nitrogenase did not restore activity.
Self-Assessment Scores Increase in Parallel with Objective Performance Measures: The Case of Information Literacy in the Context of a Randomized Blended Learning Program Evaluation

In the context of a randomized evaluation study for an information literacy instruction program with N = 67 participants, changes in objective information literacy performance measures and self-assessed abilityare examined. Results show that scores on both kinds of instruments increase nearly in parallel. Another finding is that self-assessed abilities and objective measures are moderately correlated before participation in the instruction program. The correlation, however, diminishes after participation in the instruction program; this finding is attributed to the unspecific nature of the scale which seems unsuitable in light of the higher performance levels after participation.
Do C-Reactive Protein and Lipoprotein (a) Have Different Impacts on the Severity of Coronary Artery Disease in Diabetic and Non-Diabetic Patients?

Background: The potential role of lipoprotein (a) changes and also inflammation in coronary artery disease (CAD) have rendered these processes one of the most interesting objects of study in patients affected by type 2 diabetes mellitus. The aim of the current study was to evaluate lipoprotein (a) and other lipid profiles and also C-reactive protein (CRP) as the predictors of cardiovascular disease severity in non-insulin dependent diabetic subjects in comparison with non-diabetic CAD patients. Methods: Between June and September 2004, 372 patients with CAD were enrolled at Tehran Heart Center. Non-insulin dependent diabetics accounted for 102 of the cases, and the remaining 270 were non-diabetics. The severity of CAD was evaluated using the Gensini score, and the effect of patient variables such as serum lipid concentrations and CRP on CAD severity in the diabetics was investigated and compared with that of the non-diabetics. Results: The mean of the Gensini score, CRP, and serum concentrations of all the lipid profiles were similar between the diabetic and non-diabetic patients. In the diabetic group, a high CRP concentration (β=0.200, Rs= 0.040; P=0.046) was effective on the Gensini score, whereas lipoprotein (a) and lipid profiles did not influence CAD severity. In the non-diabetics, no significant relationships were found between the Gensini score and all the studied laboratory indices. Conclusion: A high CRP level is an important predictor of the severity of CAD in diabetic patients with CAD.
Impact of Organizational Knowledge Management on Innovative Behavior: A Study in a Logistic Sector

Nowadays with the economic development, increasing global competition and incremental rate of changes, the need for creating and distributing organizational knowledge and achieving competitive advantage is dramatically increased. The purpose of this study is to assess the influence of the knowledge management on innovative behavior in logistic sector. Four dimensions of organizational knowledge creation namely socialization, externalization, combination and internalization are used to define the knowledge management. Data is gathered from 38 members of a logistic control center in a military unit and is tested by Pearson correlation. The results showed that the socialization and combination dimensions were not in proper condition within intended organization. Moreover, there were significant correlation between the externalization and internalization with the innovative behavior in logistic sector.
Merger estimates for rotating Kerr black holes in modified gravity

In this paper, we explore the signatures of non-rotating and rotating black hole mergers in the matter-free modified gravity. First, we solve the unstable circular null orbits and the innermost stable circular timelike orbits via the geodesic motion. The characteristic quantities of these orbits are systematically analyzed by varying the black hole spin and the scalar field parameter of the gravity. Then based on it, we study the ringdown modes from the light ring/quasinormal modes correspondence. The final spins of the merged black holes are also estimated with the Buonanno-Kidder-Lehner recipe. Several black hole merging cases are investigated in detail. All these results show that the black hole mergers are closely dependent of the scalar field parameter of the gravity.
Enhancing Employees’ Performance through Organizational Care Policies in the Health Care Context

Literature is increasingly recognizing that organizations must combine themes of care and concern with more established economic objectives. This conceptual study will expand on this literature by considering how expressions of organizational care toward employees, by improving their well-being, may influence their motivation, work involvement and, in turn, improve performance. In more detail, by extending the conceptual framework developed by Bonner & Sprinkle (2001), it is argued that managers should take into account the impact, not only of monetary and non-monetary incentives, but even of other caring policies, on employee motivation and performance outcomes. On this ground, this study develops a theoretical model on how organizational care may help employees in expressing their work potential and enhancing their performance. The model is developed within the health care context since its particular setting that strongly affects employees’ well-being.
A Note on Speculation, Emissions Trading and Environmental Protection

This paper addresses the role speculation may play in environmental protection under emissions trading. We build a two period model with n firms and a representative speculator, and compare a benchmark case with no speculation with one where speculation takes place under environmental policy uncertainty. We find that, when a stricter environmental policy is expected in the second period, speculation generates both a higher permits price and a better environmental quality in the first period. Further, when a decrease in future policy strictness is expected, an increase in first period environmental quality may follow. Speculation may therefore help accelerate the speed of environmental improvement.
Design and Study of Floating Point Adders using Parallel Prefix Adders

: In this paper, we propose 32 bit types of Brent-Kung, Kogge-Stone and a Ladner-Fischer parallel prefix adders. In general N-bit adders like Ripple Carry Adders (very inefficient processes of adders compare to other adders), and Carry Look Ahead adders (area consuming adders) are used in earlier days. As existing methods of an emerging computational paradigm, an inexact circuit offers a promising method to significantly reductions of the both dynamic and static power dissipation for error-tolerant applications. an inexact floating-point adder is by approximately designing an exponent sub-tractor and mantissa adder. But now the most integrated circuits are using parallel prefix adders because of their advantages compare to other adders. Parallel prefix adders are faster and area efficient. We simulate and synthesis different types of 32-bit prefix adders using Xilinx ISE 10.1i tool. We using these systems out performances, we noted the performance parameters like number of LUTs and delay.
Modélisation numérique des équilibres de phases et sa contribution à la compréhension des processus orogéniques

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Modélisation numérique des équilibres de phases et sa contribution à la compréhension des processus orogéniques Pavel Pitra
Mass Spectrum of 1 1 P 1 Meson State and Mixing Angle of Strange Axial-Vector Mesons

In the presence of the b 1 (1235), h 1 (1170),D 1 (2420), andD s1 (2536) being the members of the 1 1P 1 meson multiplet, we investigate the mass spectrum of the 1 1P 1 meson state and the mixing angle of strange axial-vector mesons in the framework of meson-meson mass mixing and Regge phenomenology. Also, in the glueball dominance picture, the kaon is phenomenologically determined to have a mass of about 1356MeV. The results are compared with the values from different phenomenological models and may be useful for the assignment of the 1 1P 1 meson multiplet in the future.
Des Garçons décrocheurs et l'école

L'ecole, meme si elle fait l'objet de debats virulents, constitue une forme d'instruction, d'education et de socialisation, qui va tellement de soi que les actes de resistance, de revolte ou de fuite qu'elle suscite sont percus comme d'autant plus choquants et inquietants qu'ils touchent a l'un des socles consensuels et fondateurs de notre societe. Dans cet article, je vais tout d'abord m'attacher a presenter ce que les etudes anterieures, principalement nord-americaines, sur le decrochage ont permis de mettre en evidence. Dans un second temps, je presenterai les resultats d'une recherche sur neuf garcons en grande difficulte scolaire, sociale et familiale. Cette approche qualitative limitee permettra d'analyser les aspects individuels et contextuels des pratiques des uns et des autres: decrocheurs, professionnels du systeme educatif et de l'intervention educative.
AN EXAMINATION OF THE APPLICATION OF PLAN-DO-CHECK-ACT CYCLE IN PRODUCT DEVELOPMENT

Plan-Do-Check-Act (PDCA) cycle is a high level methodology for achieving continuous improvement that has been a basic element of the total quality management movement. It is a practical tool and is widely adopted in the automotive sector as an improvement tool to managing improvement projects especially within manufacturing. The aim of this paper is to evaluate how the continuous improvement processes are conducted compared to the PDCA cycle and to better understand the improvement processes in a PD environment. The results from the case study shows that the PDCA cycle is not always followed precisely according to the formally described quality assurance system in the companies. Nevertheless, the case companies emphasizes that they naturally, as engineers, do improvements every day. The companies have according to our evaluations never given the PDCA method a proper chance to prove its usefulness in PD. Consequently, the companies claim that the method will be most suitable when the problem to be analyzed is sufficiently complex, when there are no time constraints and enough resources to spend on the problem.
Reasoning the ‘Net-Present-Value’ Way: Some Biases and How to Use Psychology for Falsifying Decision Models

This paper analyzes the net-present-value (NPV) model, a keystone in economics: Behaviors and lines of reasoning of NPV-minded decision makers are observed and analyzed. As a result, one finds out that the NPV methodology is biased and its decision makers fall prey to various forms of fallacies and inconsistencies. The normative side of the NPV paradigm is therefore challenged by psychological arguments. While the power of psychology in falsifying models and theories from a descriptive point of view is already recognized, it may be the case that psychology will prove useful in normative falsification of optimization models as well.
Low-cost GPS Network Positioning in Urban Environment

The GPS (Global Positioning System) allows the estimation of the absolute position of a receiver, via signals transmitted by satellites. However, this estimation is affected by errors, especially those resulting from the atmospheric effects. With the goal of minimizing the impact of these errors, it is, therefore, presented an innovative solution for the determination of the position of a rover receiver, through its relative positioning to a network of three fixed receivers, using double differences algorithms that eliminate major errors. All the receivers that were used are referred to as low-cost, acquire signals from one single frequency, L1, and have the ability to acquire and to lock the phase signal data. The use of these receivers was related to the fact that they are the most common in the civil community. Therefore, this network can actually be a contribution to the improvement of the receivers' position in urban scenario. The tests performed to evaluate the developed and implemented algorithms for this dissertation showed that the designed network significantly decreased the existing GPS errors. In this way, using only code signal data, the accuracy of the rover receiver's position was increased, in comparison with the positions calculated by the stand-alone algorithm.
The Significance of Experience Rating

In the contemporary context of workers' compensation in Canada, there is probably nothing that is so fervently supported or so little understood as experience rating. Proposals for the widespread expansion of experience rating have been made and adopted, yet with no analysis of the consequences and with no reasons being given that could withstand serious reflection. It is as if a political steam-roller has made the widespread expansion of experience rating a part of inevitable destiny regardless of the consequences. In this climate, any questioning of the movement might be seen as irrelevant, perhaps even recalcitrant. Nevertheless, the aim of this paper is to contribute to an understanding of the significance of experience rating.
Parallel Computing in Fuzzy Decision Making Systems

Bazı karar problemlerinde, alternatif, kriter ve karar vericilerin sayısı çok yüksektir. Bu yüzden hesaplama işlemi daha zor, zaman alıcı ve karmaşık bir hal alır. Bu karmaşık işlemleri daha kısa sürede gerçekleştirilebilmek için paralel hesaplama gibi popüler teknolojiler mevcuttur. Bu çalışmada, Bulanık Analitik Hiyerarşi Süreci (BAHS) ve TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) yöntemlerinden oluşan bulanık bir karar verme sisteminde paralel hesaplamanın tasarlanması ve gerçekleştirimi incelenmiştir. Paralel hesaplama, hesaplamanın en yoğun olduğu BAHS adımında gerçekleştirilmiştir. Önerilen yöntem, homojen ve heterojen bilgisayarlarda ayrı ayrı denenmiş ve sonuçlar tartışılmıştır. In some decision problems, the numbers of alternatives, criteria and decision-makers are very high. Therefore the calculation process becomes more difficult, time consuming and complex. To achieve these complex tasks in a shorter time, popular technologies such as parallel computing are available to use. In this study, design and implementation of parallel computation in a fuzzy decision making system which consists of the methods: Fuzzy Analytic Hierarchy Process (FAHP) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) was investigated. Parallel computing was carried out in FAHP phase that is most intensive phase of calculation. Proposed method was tested in homogeneous and heterogeneous computers separately and results were discussed. Anahtar kelimeler: Bulanık karar verme, Paralel hesaplama, Bulanık analitik hiyerarşi süreci, TOPSIS.
The worldview and not the economy: explaining resistance towards organic farming among farmers in India

i List of tables and figures iii List of appendixes iii Chapter 1: Introduction 1 Background and problem discussion 1 Impacts of agriculture 1 Organic agriculture 3 Statement of purpose 4 Thesis structure 5 Chapter 2: Theoretical frame of reference 7 Factors affecting attitudes 7 Economic factors and policy 7 Farm characteristics 9 Knowledge and information 9 Societal context and farmer characteristics 10 Measures 12 Innovation diffusion 15 Chapter 3: Methodology 19 Research design 19 Case study approach 19 Sampling 20 Data collection methods 20 Data analysis 23 Reliability and validity 23 Chapter 4: Empirical findings 25 Context 25 India 25 Kodagu 29 Factors affecting attitudes 32 Economic factors 34 Policy 40 Farm characteristics 43 Knowledge and information 45
The effects of caloric restriction and age on thyroid hormone signalling in the heart of rats.

Thyroid hormones (TH) are believed to participate in adaptation of the heart to dietary caloric restriction (CR). The effect of CR on cardiac thy- roid hormone receptors α and β (TRα and TR β) has been hitherto insufficiently investigated, however, and with respect to the impact of CR on cardiac type 2 and 3 deiodinases (D2 and D3), we have not found any literature data. The aim of this study was to assess the effect of CR and age on thyroid hormone (TH) signalling (D2, D3, TR α and β) and myosin heavy chain β (BMHC) in the heart. The study was performed on 17-week- and 45-week-old male Sprague Dawley rats, fed ad libitum (AL) or restricted to 80% or 60% of AL energy intake. Plasma concentrations of TSH, total and free T3 and T4 (fT3 and fT4), protein levels of heart D2 and D3, THRα, THRβ, myosin heavy chain β (BMHC) mRNA expression and cardiac BMHC protein were determined. Morphological and endocrine parameters were influenced by age (fT3/T3, fT4/T4, THRα, BMHC protein), feeding level (TSH, T4, T3, BMHC mRNA), or by both age and feed- ing level (body weight, fT4, fT3). Caloric restriction reduced fT3, T4, and fT4 levels in both age groups, with additional decreases in TSH and T3 occurring in younger rats. Independently of age, cardiac BMHC expression was positively correlated with cardiac D3 and negatively with food intake and thyroid hor- mones. The most important finding of our study is that cardiac D3 and BMHC protein are, under conditions of differentiated dietary energy supply, directly related in both young and middle-aged rats.
Elongating under Stress Eulàlia de Nadal and Francesc Posas

In response to extracellular stimuli, mitogen-activated protein kinases (MAPKs) modulate gene expression to maximize cell survival. Exposure of yeast to high osmolarity results in activation of the p38-related MAPK Hog1, which plays a key role in reprogramming the gene expression pattern required for cell survival upon osmostress. Hog1 not only regulates initiation but also modulates other steps of the transcription process. Recent work indicates that other yeast signalling MAPKs such as Mpk1 modulate transcriptional elongation in response to cell wall stress. Similarly, mammalian MAPKs have also been found associated to coding regions of stress-responsive genes. In this paper, significant progress in MAPK-regulated events that occur during the transcriptional elongation step is summarized, and future directions are discussed. We expect that the principles learned from these studies will provide a new understanding of the regulation of gene expression by signalling kinases.
Photo-responsive Properties on Locally Confined Ultrathin Silicon Nanowires

Functional ultrathin silicon nanowires (SiNWs) are promising building blocks for high responsive photo-detectors and ultra-high sensitive bio-chemical sensors. In this work we investigate the photo responsive characteristics of of ultrathin SiNW arrays fabricated using a novel top-down process. The fabricated SiNW arrays were able to detect light from the UV to the visible range with good sensitivity and ultrahigh photoresponsivity (R~ 10 A/W). In addition, the SiNWs displayed good stability and reliability over long-term measurements at different temperatures (273 – 343 K) in both forward and reverse bias directions. By sensitizing the fabricated SiNW arrays with cadmium telluride (CdTe) quantum dots (QDs), hybrid QD SiNW arrays were created and displayed a significant improvement in photocurrent response under UV light, while preserving their performance in the visible light range. The fast, stable and high photo response of these new hybrid nanostructures is very promising towards the development of novel optoelectronic and photovoltaic devices.
A Review of Paulownia Biotechnology: A Short Rotation, Fast Growing Multipurpose Bioenergy Tree

Paulownia is a genus of fast-growing and multipurpose tree species that is native to China. Due to their rapid growth and value in the timber market, many Paulownia species are cultivated in several temperate zones worldwide. Economic importance of Paulownia is increasing as new uses and related products are developed. It is also suitable as a lignocellulosic feedstock crop for the bioethanol industry in the Southeastern USA. A number of Paulownia species are valuable sources of secondary metabolites including flavonoids with high antioxidant activities. A high demand for planting material in domestic and international markets for afforestation and bioenergy production has necessitated the development of efficient micropropagation protocols for rapid and mass propagation of Paulownia. Over the past several decades, research on Paulownia species has been conducted to develop micropropagation, somatic embryogenesis and genetic transformation protocols for use in agroforestry and reforestation programs. Given the economic importance and current and potential future uses of Paulownia, this paper reviews the development of biotechnological approaches for plant propagation and genetic improvement, and antioxidant potential of secondary metabolites occurring in species.
EUROPEAN RAPESEED AND FOSSIL DIESEL: THRESHOLD COINTEGRATION ANALYSIS AND POSSIBLE IMPLICATIONS

For European operators of biofuels plants there are not many hedge vehicles available to hedge operational margins. Cross hedges for rapeoil (with the rapeseed futures contract) and RME (with the NYMEX diesel futures contract) could be useful instruments. We use recent developments on threshold cointegration approaches to investigate if asymmetric dynamic adjusting processes exist among rapeseed and diesel prices. The results suggest that a threeregime threshold cointegration model suitably explains the dynamics of the data.