National University of Malaysia

About: National University of Malaysia is a education organization based out in Kuala Lumpur, Malaysia. It is known for research contribution in the topics: Population & Heat transfer. The organization has 26593 authors who have published 41270 publications receiving 552683 citations. The organization is also known as: NUM & Universiti Kebangsaan Malaysia.

NRG1 represses yeast–hypha morphogenesis and hypha‐specific gene expression in Candida albicans

Abstract: We have characterized CaNrg1 from Candida albicans, the major fungal pathogen in humans CaNrg1 contains a zinc finger domain that is conserved in transcriptional regulators from fungi to humans It is most closely related to ScNrg1, which represses transcription in a Tup1-dependent fashion in Saccharomyces cerevisiae Inactivation of CaNrg1 in Calbicans causes filamentous and invasive growth, derepresses hypha-specific genes, increases sensitivity to some stresses and attenuates virulence A tup1 mutant displays similar phenotypes However, unlike tup1 cells, nrg1 cells can form normal hyphae, generate chlamydospores at normal rates and grow at 42°C Transcript profiling of 2002 Calbicans genes reveals that CaNrg1 represses a subset of CaTup1-regulated genes, which includes known hypha-specific genes and other virulence factors Most of these genes contain an Nrg1 response element (NRE) in their promoter CaNrg1 interacts specifically with an NRE in vitro Also, deletion of two NREs from the ALS8 promoter releases it from Nrg1-mediated repression Hence, CaNrg1 is a transcriptional repressor that appears to target CaTup1 to a distinct set of virulence-related functions, including yeast–hypha morphogenesis

Energy-Efficient Wireless Sensor Networks for Precision Agriculture: A Review.

Abstract: Wireless sensor networks (WSNs) can be used in agriculture to provide farmers with a large amount of information. Precision agriculture (PA) is a management strategy that employs information technology to improve quality and production. Utilizing wireless sensor technologies and management tools can lead to a highly effective, green agriculture. Based on PA management, the same routine to a crop regardless of site environments can be avoided. From several perspectives, field management can improve PA, including the provision of adequate nutrients for crops and the wastage of pesticides for the effective control of weeds, pests, and diseases. This review outlines the recent applications of WSNs in agriculture research as well as classifies and compares various wireless communication protocols, the taxonomy of energy-efficient and energy harvesting techniques for WSNs that can be used in agricultural monitoring systems, and comparison between early research works on agriculture-based WSNs. The challenges and limitations of WSNs in the agricultural domain are explored, and several power reduction and agricultural management techniques for long-term monitoring are highlighted. These approaches may also increase the number of opportunities for processing Internet of Things (IoT) data.

National character does not reflect mean personality trait levels in 49 cultures

Abstract: Most people hold beliefs about personality characteristics typical of members of their own and others' cultures. These perceptions of national character may be generalizations from personal experience, stereotypes with a "kernel of truth," or inaccurate stereotypes. We obtained national character ratings of 3989 people from 49 cultures and compared them with the average personality scores of culture members assessed by observer ratings and self-reports. National character ratings were reliable but did not converge with assessed traits. Perceptions of national character thus appear to be unfounded stereotypes that may serve the function of maintaining a national identity.