Miracle-dz/UniFAR-FTUs huggingface dataset:
Nutritional constraints on root nodule bacteria affecting symbiotic nitrogen fixation: a review

Root nodule bacteria require access to adequate concentrations of mineral nutrients for metabolic processes to enable their survival and growth as free-living soil saprophytes, and in their symbiotic relationship with legumes. Essential nutrients, with a direct requirement in metabolism of rhizobia are carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, potassium, calcium, magnesium, iron, manganese, copper, zinc, molybdenum, nickel, cobalt and selenium. Boron does not seem to be required by rhizobia, but is essential for the establishment of effective legume symbioses. Nutrient constraints can affect both free-living and symbiotic forms of root nodule bacteria, but whether they do is a function of a complex series of events and interactions. Important physiological characteristics of rhizobia involved in, or affected by, their mineral nutrition include nutrient uptake, growth rate, gene regulation, nutrient storage, survival, genetic exchange and the viable non-culturable state. There is considerable variation between genera, species and strains of rhizobia in their response to nutrient deficiency. The effects of nutrient deficiencies on free-living rhizobia in the soil are poorly understood. Competition between strains of rhizobia for limiting phosphorus and iron in the rhizosphere may affect their ability to nodulate legumes. Processes in the development of some legume symbioses specifically require calcium, cobalt, copper, iron, potassium, molybdenum, nickel, phosphorus, selenium, zinc and boron. Limitations of phosphorus, calcium, iron and molybdenum in particular, can reduce legume productivity by affecting nodule development and function. The effects of nutrient deficiencies on rhizobia-legume signalling are not understood. The supply of essential inorganic nutrients to bacteroids in relation to nutrient partitioning in nodule tissues and nutrient transport to the symbiosome may affect effectiveness of nitrogen fixation. An integration of molecular approaches with more traditional biochemical, physiological and field-based studies is needed to improve understanding of the agricultural importance of rhizobia response to nutrient stress.
Head-heuristic human detection in RGB-D images

Reliable human detection and tracking is important for a wide range of applications. In this paper, a particular designed method for real-time human detection has been proposed. The method is robustly in cluttered and dynamic environments, and deals with depth images. The method has two steps, first the hypothesis human head regions are localized by a superpixel based segmentation and merging approach. Then we utilize a multi-channel measurement and employ neural network for classification between human and non-human region refinement. Our approach, which detects human in depth images, allows very fast speed and high accuracy in three publicly available datasets.
From confounded to common ground: Misunderstandings between tertiary teachers and students in online discussions

Drawing on findings from two studies, this article focuses on the expectations of students and teachers in higher education, when learning via asynchronous online discussions. In particular, this synthesis highlights a divergence of expectations. The first study investigated how students and teachers experienced asynchronous online discussion within initial teacher education at undergraduate level. The second study examined factors that affect learner engagement within asynchronous online discussions at a postgraduate level. A synthesis of key findings proposes that learning and teaching in higher education can be enhanced by awareness of how participants experience the situation. Common misunderstandings between students and teachers in online classes revolve around presence, formative/summative dimensions, language, and literature. Highlighting misunderstandings enables possibilities for negotiation, change, and improvement. While discussing the common ground for negotiation, this article suggests pedagogical strategies for effective communication and enhancement of online learning in higher education.
Intelligent mobile robot control system based on PC+ underlying motion controller

Open-structure mobile robot motion control system based on “PC + underlying motion controller” could take advantage of the high degree of good versatility, real-time performance, high processing capacity of PC, and high controlling capacity of underlying motion controller. And the overall design of the open- structure mobile robot motion controller based on PC + stm32 is developed, which contains the system control architecture, the layered architecture of the control system and the human-computer interface. An algorithm also proposed for estimating the robot’s position and orientation, and the experimental system built for the prototype, provided the platform for moving, monitoring and automation. Experimental results of the proposed control system show that the open-structure mobile robot owns the stability, accuracy, rapid response and exact localization.
Automating Penetration Testing Within Ambiguous Testing Environment

Automated web application penetration testing has emerged as a trend. The computer was assigned the task of penetrating web application security with penetration testing technique. Relevant computer program reduces time, cost, and resources required for assessing a web application security. At the same time, scaling down tester reliance on human knowledge. Web application security scanner is such kind of program that is designed to assess web application security automatically with penetration testing technique. The downside is that computer is not well-formed as human. Consequently, web application security scanner often found generating the false alarms, especially in a testing environment, which web application source codes are unreachable. Thus, in this paper, the state-of-the-art of black box web application security scanner is systematically reviewed, to investigate the approaches for detecting web application vulnerability in an ambiguous testing environment. This survey is critical in providing insights on how to design efficient algorithms for assessing web application security with penetration testing technique in the ambiguous environment.
Digital implementation of three-phase rectifier with deadbeat controller

–A full digital control of a voltage source converter (VSC) rectifier is presented. The behavior of the AC and DC sides were modeled and used for the design of the AC current tracking controller and DC voltage regulator. The AC current control, based on the deadbeat strategy is presented in a simple and intuitive way. The DC side PI controller is designed based on the linearized model of the converter. A simple and efficient Phase Locked Loop (PLL) based on the deadbeat strategy is presented. The performance of the complete system is verified by numerical simulation and experimental results, validating the proposed model and control strategy. Effect of parameter mismatch is also discussed.
An Analysis of the Acceptance of Cbt Vhs Application Using Technology Acceptance Model (Tam) and Theory of Planned Behavior (Tpb) Integration

One of the technology implementation in education is for learning evaluation. Computer Based Test (CBT) can be used as an assessment in learning evaluation. The research aim to analyse technology acceptance of Vocational High School (SMK) CBT using Technology Acceptance Model (TAM) and Theory Of Planned Behavior (TPB) integration. This research uses corellational research with ex-post facto approach. The participants in this research are Vocational students who use CBT on daily test, Mid Test and Final test. The total of the participants are 137 students of SMK and the participants are chosen by stratified random sampling technique. The data is analysed using SEM (Structural Equation Model) with SmartPLS Version 3.0 software. The result of this research indicate that the model comply the value of Goodness of fit SMSR of 0,063 and show that (1) Computer Self Efficacy effect on PEOU; (2) Complexity effects on PEOU; (3) PEOU effects on PU; (4) PU effects on ATU; (5) PEOU effects on ATU; (6) PU does not effects on BIUS; (7) ATU effects on BIUS; (8) SN effects on BIUS; (9) PBC effects on BIUS. The technology acceptance model that is obtained can give the description that regardless of the benefits of CBT, if there is no regulation to use CBT, the system of CBT will not effect the intention to use the system.
[Towards bisphenols without hormonal effects].

1 Institut de Recherche en Cancérologie de Montpellier, Institut National de la Santé et de la Recherche Médicale U896, Centre Régional de Lutte contre le Cancer Val d’Aurelle Paul Lamarque, Université Montpellier 1, 34298 Montpellier, France. 2 Centre de Biochimie Structurale, Institut National de la Santé et de la Recherche Médicale U1054, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5048, Universités Montpellier 1 and 2, 34090 Montpellier, France.
Prevalence of antibodies to toxoplasma in farm animals in the Netherlands and its implication for meat inspection.

Summary A serological survey on toxoplasmosis was carried out amongst horses, sheep, cattle, pigs, and poultry in the Netherlands. Sera were obtained from slaughter animals and the results were compared with those of previous studies of this kind in the Netherlands. In horses and cattle the percentage of seropositive animals remained the same in the past 20 years. In sheep and particularly in pigs, however, a remarkable decline of seropositive animals was found. This is probably due to the age of the animals examined and a change in present day methods of farming. In poultry it was shown that only free scratching hens were seropositive in up to 30 per cent of the animals tested, whereas broilers and battery animals were seronegative. Since as yet no individual control measures in the slaughterhouse exist with regard to toxoplasmosis it is recommended to carry out periodic epizootiological surveys amongst farm animals to be able to follow trends of the infection.
Un nouveau concept de mécanisme de clairance respiratoire

m/s n° 2, vol. 29, février 2013 DOI : 10.1051/medsci/2013292010 4. Slezak M, Grosche A, Niemiec A, et al. Relevance of exocytotic glutamate release from retinal glia. Neuron 2012 ; 74 : 504-16. 5. Poulain B. Botulinum neurotoxin. Rev Neurol (Paris) 2010 ; 166 : 7-20. 6. Kölliker A, Müller J. Compte Rendu hebdomadaires des Séances de l’Académie des Sciences 1853 ; 37 : 48892. 7. Bringmann A, Pannicke T, Grosche J, et al. Muller cells in the healthy and diseased retina. Prog Retin Eye Res 2006 ; 25 : 397-424. 8. Slezak M, Goritz C, Niemiec A, et al. Transgenic mice for conditional gene manipulation in astroglial cells. GLIA 2007 ; 55 : 1565-76. 9. Halassa MM, Florian C, Fellin T, et al. Astrocytic modulation of sleep homeostasis and cognitive consequences of sleep loss. Neuron 2009 ; 61 : 213-9. REMERCIEMENTS Nous remercions nos collègues qui ont participé à cette étude et présentons nos excuses à ceux dont les travaux n’ont pu être cités faute d’espace suffisant.
Optimization of Trusses With Self-Adaptive Approach In Genetic Algorithms

Abstract This paper presents a genetic algorithm method for the optimization of the weight of steel truss structures. In the method of genetic algorithm integer encoding of a discrete set of design variables and novel self-adaptive method based on fuzzy logic mechanism are applied for improving the quality and speed of optimization. Self-adaptive method is applied simultaneously in the selection of chromosomes and to control basic parameters of genetic algorithm. The algorithm proposed in the work was tested on the examples of optimization of steel trusses. Obtained results proved the effectiveness of genetic algorithm in relation to classical genetic algorithm.
Srf : un acteur clé de l’hypertrophie du muscle squelettique

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Paracrine and autocrine functions of the placenta: a key to the success of viviparity?

The evolution of specific nuclear transcriptional regulators has endowed tissues of the reproductive system with responsiveness to small hydrophobic compounds such as steroids. Steroids are widely distributed in Nature and their distribution in prokaryotes and eukaryotes has given rise to the concept that their hormonal role came about by target organ specialization and not by the evolution of steroids themselves. Specific nuclear receptors for progesterone in the uterus are prominent during the establishment and maintenance of pregnancy. Anti-progesterone antagonists which interfere with receptor-mediated DNA activation abrogate pregnancy and thus emphasize the functional importance of the pathways by which the effects of progesterone as an extracellular signal are transduced. Comparative studies show that progesterone itself can be ovarian or placental in origin. This seems to reflect the evolution of different mechanisms of endocrine function rather than any obvious selective advantage being associated with the source of hormone secretion. For this reason, the question of whether the endocrine function of the placenta is obligatory for the adoption of viviparity in mammals is far from certain, and should be considered as an evolutionary option rather than a sine qua non. Of growing importance is the idea that the interaction between trophoblast and endometrial cells controls the degree of invasiveness at implantation and immunoreactivity. (ABSTRACT TRUNCATED AT 250 WORDS)
[Proper use of non-invasive prenatal tests].

Les tests non invasifs ont le vent en poupe [1] : ils apportent des informations à partir de l’analyse de fluides biologiques (sang, mais aussi urines, sueur ou larmes), évitant ainsi les prélèvements et les biopsies toujours désagréables et qui comportent parfois des risques non négligeables. Dans certains cas il s’agit de biomarqueurs protéiques, mais souvent aussi d’ADN. C’est le cas du dépistage non invasif de la trisomie 21, introduit en pratique clinique à partir de 2011 et qui rencontre actuellement un grand succès, notamment aux États-Unis [2]. L’objectif de cette chronique est de faire le point sur les performances de ces analyses et sur les questions actuellement posées par leur rapide généralisation.
Quand les microtubules rencontrent les puits recouverts de clathrine et permettent aux cellules de tenir le cap

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L’activité neuronale influence le développement des vaisseaux sanguins du cerveau

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Sperm capacitation and fertilization in mammals.

Current evidence and speculations concerning the nature of sperm capacitation in mammals are reviewed and critically assessed. Capacitation a subtle functional change which must occur at least in some mammals before fertilization can take place occurs in sperm as a result of exposure to secretions of the female tract. In some species the noncapacitated state may enable sperm to undergo a period of storage in the cauda epididymidis after completion of maturation in the mate; alternatively the noncapacitated state may enable sperm to withstand exposure to the female tract for some time before the arrival of the egg. In several species evidence indicates capacitation enables sperm to penetrate the cumulus oophorus and the zona pellucida. Capacitation may involve changes on the sperm surface such as the unmasking of so-called receptor sites. Both the uterus and the fallopian tube play a part in capacitation. Contraception via capacitation control by steroid therapy alone is unlikely to be achieved. The question of the need for capacitation in man is as of yet resolved. Areas reviewed include need for capacitation in different mammals analysis of factors important for capacitation changes in sperm during capacitation and events involved in fertilization. Species for which definite evidence of capacitation has been found include the rat rabbit hamster ferret and sheep.
A Virtualization Desktop Application Platform of the Virtualized Graphics Processing Unit Technology on FlexPod Architecture

Intelligent equipment and network application based on Artificial Intelligence, Big Data, Internet of Things and other emerging technologies are becoming one of the most important efforts in the construction of experimental and training information infrastructure in Colleges and Universities. Aiming at the problem that the application environment of teaching experiment and training in Colleges and Universities of Art and Design requires higher performance ability of virtual desktop and graphics processing, the specific characteristics on training room of art and design, and the design ideas and principles of virtualization desktop technology, are analysed on the unique perspective of specific projects of Shanghai Institute of Visual Arts. A virtualization desktop application platform of the Virtualized Graphics Processing Unit Technology on FlexPod Architecture is put forward. With the application of this platform, the performance of the desktop is improving, and the complexity of IT management is reducing, and the model for the application of the virtual desktop technology for colleges and universities of art and design is provided.