The Research on Growthtraits of Alfalfa Irradiated by &lt;sup&gt;12&lt;/sup&gt;C&lt;sup&gt;6 +&lt;/sup&gt; Ion Beam

Due to limited numbers of program/erase cycles (i.e., P/Es) of NAND Flash, excessive out-of-place update and erase-before-write operations wear out these P/Es during garbage collections, which adversely shorten solid state disk (i.e., SSD) lifetime. The log space in NAND Flash space of an SSD performs as an updated page ′s buffer, which lowers garbage-collection frequency while reducing consumption of P/Es to extend SSD lifetime. In this article, we propose DLSpace, a novel distributed log space allocation strategy named d istributed l og space , which divides log space into block-level log space and page-level log space to significantly optimize SSD lifetime. DLSpace′s log page space is dedicated to data pages in a data block. Such log page space only buffers page-update operations in this data block; thereby the use of log blocks for postponing garbage collection delays. DLSpace is conducive to fully utilizing pages in data and log blocks to avoid erasures of blocks with free pages. Consequently, DLSpace decreases write amplification by reducing excessive valid page-rewrite and block-erase operations under random-write-intensive workloads. We carried out quantitative research on the extension of SSD lifetime by virtue of three metrics (i.e., write amplification, the number of block-erase operations, and the delay time before the first garbage collection occurring). Experimental results reveal that compared with the existing t raditional allocation strategy for l og space (i.e., TLSpace), DLSpace reduces write amplification and the number of erase operations by up to 55.2% and 64.1% to the most extent, respectively. DLSpace also extends TLSpace′s delay time of garbage collections by 73.3% to optimize SSD lifetime.

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Ionizing Radiation: Effective Physical Agents for Economic Crop Seed Priming and the Underlying Physiological Mechanisms

Wang

Zhang

Zhou

et al. 2022

IJMS

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To overcome various factors that limit crop production and to meet the growing demand for food by the increasing world population. Seed priming technology has been proposed, and it is considered to be a promising strategy for agricultural sciences and food technology. This technology helps to curtail the germination time, increase the seed vigor, improve the seedling establishment, and enhance the stress tolerance, all of which are conducive to improving the crop yield. Meanwhile, it can be used to reduce seed infection for better physiological or phytosanitary quality. Compared to conventional methods, such as the use of water or chemical-based agents, X-rays, gamma rays, electron beams, proton beams, and heavy ion beams have emerged as promising physics strategies for seed priming as they are time-saving, more effective, environmentally friendly, and there is a greater certainty for yield improvement. Ionizing radiation (IR) has certain biological advantages over other seed priming methods since it generates charged ions while penetrating through the target organisms, and it has enough energy to cause biological effects. However, before the wide utilization of ionizing priming methods in agriculture, extensive research is needed to explore their effects on seed priming and to focus on the underlying mechanism of them. Overall, this review aims to highlight the current understanding of ionizing priming methods and their applicability for promoting agroecological resilience and meeting the challenges of food crises nowadays.

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The Research on Growthtraits of Alfalfa Irradiated by <sup>12</sup>C<sup>6 +</sup> Ion Beam

Cited by 3 publications

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Research on endurance evaluation for NAND flash-based solid state drive

Research on endurance evaluation for NAND flash-based solid state drive

DLSpace

Ionizing Radiation: Effective Physical Agents for Economic Crop Seed Priming and the Underlying Physiological Mechanisms

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