Area-selective atomic layer deposition (AS-ALD) is a bottom-up process that selectively deposits thin films onto specific areas of a wafer surface. The surface reactions of AS-ALD are controlled by blocking the adsorption of precursors using inhibitors such as self-assembled monolayers (SAMs) or small molecule inhibitors. To increase selectivity during the AS-ALD process, the design of both the inhibitor and the precursor is crucial. Both inhibitors and precursors vary in reactivity and size, and surface reactions are blocked through interactions between precursor molecules and surface functional groups. However, challenges in the conventional SAM-based AS-ALD method include thermal instability and potential damage to substrates during the removal of residual SAMs after the process. To address these issues, recent studies have proposed alternative inhibitors and process design strategies.
The postharvest quality of cut flowers often declines during transportation, especially under dry storage conditions. Therefore, incorporating preservative solutions during shipment is vital for extending the vase life of high-value cut flowers. Among commonly used additives, sucrose (Suc) and Floralife (FL), a commercial preservative, have demonstrated efficacy in maintaining vase life. Oxygen nanobubbles (O2NB) and ozone nanobubbles (O3NB), which are nanoscale gas-filled bubbles in aqueous media, have been proposed as antimicrobial agents for use in preservative solutions applied to cut flowers. This study examined the effects of seven preservative treatments on the postharvest performance of cut Cymbidium ‘Lovely King’ during simulated transport. Treatments included tap water (control), Suc, FL, O2NB, O2NB combined with Suc (O2NBS), O3NB, and O3NB combined with Suc (O3NBS). Cut stems were placed in floral water tubes filled with the respective solutions and stored in a cold chamber at 5°C for 7 days to simulate transport conditions. Among the treatments, O2NB resulted in the longest vase life of 21.0 days, significantly longer than that under O2NBS (14.3 days). Additionally, the O2NB solution exhibited the lowest bacterial count (4.9 log 10 CFU mL-1) compared with other treatment solutions. Stems treated with O3NB maintained the highest relative fresh weight throughout the experiment. Initial water uptake was 8.4 g and 7.6 g for the O3NB and O2NB treatments, respectively. These findings indicate that O2NB is an effective transport preservative for enhancing postharvest quality and extending the vase life of cut Cymbidium ‘Lovely King.’
Hallucinations represent a transdiagnostic phenomenon observed in multiple neuropsychiatric disorders, including schizophrenia, substance use disorder and substance-induced psychotic conditions. Despite their clinical prevalence, objective assessment remains challenging due to its subjective nature, underscoring the critical need for validated translational models. The present study explores the biological mechanisms underlying hallucinations, evaluates the animal models developed to date, and discusses methods for analyzing these models along specific pathways. Hallucinations are primarily mediated through glutamatergic and/or serotonergic pathways. Numerous animal models for assessing hallucinations have been extensively reported; however, these models have mainly been designed to investigate specific neurotransmitter mechanisms, rather than encompassing all relevant pathways. Therefore, this study systematically examines currently established animal models based on the aforementioned neurotransmitter mechanisms and proposes future directions for developing universal animal models capable of comprehensively evaluating hallucinatory phenomena. The present study aims to provide deeper insights for future research involving animal models of hallucination.
농작물의 수분 매개자이며 생태계 유지에 필수적인 역할을 하는 꿀벌의 노제마병(nosemosis)은 꿀벌 집단 붕괴현상(colony collapse disorder: CCD)의 원인 중 하나로 알려져 있다. 또한, 노제마병은 봉군 약화를 초래할 뿐 아니라 여러 가지 양봉 산물의 생산성을 낮추는 원인이기도 하다. 국내에서는 Nosema ceranae가 노제마병의 주요 병원체로 알려져 있다. 노제마 감염을 확인하기 위해서는 꿀벌의 중장을 적출한 후 노제마 포자의 확인 및 계수를 통해 감염 수준을 평가할 수 있다. 본 연구에서는 더욱 빠르고 정확하게 노제마 감염 수준을 평가할 수 있는 새로운 방법으로 포자 염색법과 qPCR 방법을 개발하였다. 노제마 포자에 대해 특이적인 염색이 가능한 Fluorescent Brightener를 이용하여 노제마 감염 꿀벌 중장을 염색한 결과, 형광 발현으로 노제마의 감염 여부를 확인할 수 있었다. 또한, 중장내 포자량에 비례한 형광 발현도 확인할 수 있었다. 그러나, 노제마 감염에 대한 특이도 및 포자량에 비례한 형광 발현 민감도는 신뢰하기 어려웠다. 그에 비해, 노제마 특이 유전자를 이용한 qPCR 방법은 노제마의 감염 여부 뿐만 아니라 포자량에 비례한 감염 수준 결정이 가능함을 확인하였다. 특히, 많은 시료들에서 노제마 감염 수준의 신속하고 정확한 평가에 qPCR 방법은 유용하게 활용될 수 있을 것으로 기대되었다.
This paper addresses a scheduling problem aimed at minimizing makespan in a permutation flow shop with two machines and an inspection process that must be conducted at least once every certain number of outcomes from the first machine. A mathematical programming approach and a genetic algorithm, incorporating Johnson's rule and a specific mutation process, were developed to solve this problem. Johnson's rule was used to generate an initial population, while the mutation process ensured compliance with the inspection constraints. The results showed that within a computation time limit of 300 seconds, the mathematical programming approach often failed to provide optimal or feasible solutions, especially for larger job sets. For instance, when the process times of both machines were similar and the inspection time was longer, the mathematical programming approach failed to solve all 10 experiments with just 15 jobs and only had a 50% success rate for 100 jobs. In contrast, the proposed genetic algorithm solved all instances and delivered equal or superior results compared to the mathematical programming approach.
최근 국내에서는 온라인 거래를 통한 화훼류의 판매가 증가 하고 있다. 온라인 플랫폼의 종류에 따라서 각기 다양한 운송 시스템과 포장 방법을 이용하고 있지만, 품질과 관련된 정보가 부족한 실정이다. 특히, 일반 택배 배송을 이용하는 직거래 방식 은 다양한 외부 환경에 노출되기 때문에 품질에 문제가 발생할 수 있다. 절화장미는 외부의 환경에 노출되는 통기 구멍이 있는 포장 박스와 외부의 환경과 단절된 밀폐된 포장 박스가 사용되 고 있다. 포장 박스의 종류에 따른 절화장미의 품질을 조사한 결과 통기구가 있는 포장 박스를 이용하여 택배 운송한 절화장 미는 운송 중의 낮은 습도로 인해 생체중 감소가 높아 품질이 하락하였다. 밀폐된 포장 박스를 이용해서 운송한 절화장미는 통기 구멍이 있는 포장 박스를 이용해 운송한 절화장미보다 생 체중 감소는 작았지만, 포장 박스 내부의 온도가 높아져 품질이 하락하였다. 내부가 코팅된 밀폐형 포장박스 내부에 절화장미와 함께 냉매를 동봉하여 포장 후 운송하면, 운송 중 포장박스 내부 의 온도를 경감하고 품질을 보존하는 효과가 있었다.
Maize (Zea mays. L) is one of the major sources of green fodder for livestock in Pakistan. Crop management plays a key role in obtaining high yields for green fodder. Fertilizer application, seed rate, and row spacing are critical components of crop management, which can significantly affect crop biomass. To determine the best production technology, a two-year (2021-2023) study was conducted at the research area of National Agricultural Research Center, Islamabad. Plant height, number of leaves, leaf area, green fodder yield per acre, and green fodder yield per hectare were recorded. Various row spacing (15 cm, 30 cm, 45 cm, and 60 cm), fertilizer ratio (N: P = 55:30, 65:40, 75:50, and 85:60), and seed rates (30 kg/ac, 35 kg/ac, 40 kg/ac, and 45 kg/ac) were applied. Results obtained experiments revealed that in both growing seasons, the maximum green fodder yield was obtained when fertilizer N: P ratio was 75:50 (green fodder biomass: 74.61 t/ha and 72.56 t/ha). Similarly, the optimal seed rate was found to be 40 kg/ac, which resulted in the highest green fodder yield (73.41 t/ha and 72.88 t/ha in two seasons). Furthermore, the plant of maize at row spacing of 30 cm was found to generate the maximum green fodder yield (72.39 t/ha and 72.40 t/ha, respectively). Green fodder yield per hectare was found to be positively correlated with plant height, number of leaves, and leaf area. These findings underscore the significance of applying a fertilizer ratio of N: P = 75:50, a seed rate 40 kg/ac, and a row spacing of 45 cm for higher yields of green fodder in maize crop.
Production technology trials for PARC’s new fodder oat cultivar (PARC-Oat) were conducted at the National Agricultural Research Center (NARC) under rain-fed conditions in Islamabad from 2021 to 2023. The effects of different fertilizer doses, planting densities (seed rates), and inter-row spacing on green fodder yield were studied. The experiment comprised four fertilizer doses of nitrogen and phosphorus (N:P) (55:30, 65:40, 75:50, and 85:60 kg/ha), four seed rate densities (30 kg/ac, 35 kg/ac, 40 kg/ac, and 45 kg/ac), and four inter-row spacings (15 cm, 30 cm, 45 cm, and 60 cm). Results based o n k ey p arameters a ffecting t he y ield of PARC-O at—namely plant height (cm), leaf area (cm²), leaves per tiller, number of tillers per plant, and green fodder yield (t/ha)—indicated that the maximum yield of 72.74 t/ha was observed with the fertilizer dose of 75:50 kg/ha (N:P). Similarly, a seed rate of 40 kg/ha produced optimal planting densities, resulting in the highest green fodder yield of 72.85 t/ha, while an inter-row spacing of 30 cm yielded the maximum green fodder yield of 74.30 t/ha. These results suggest that to achieve maximum green fodder biomass of oats, best management practices should include the application of a fertilizer dose of 75:50 (N:P), a seed rate of 40 kg/ha, and an inter-row spacing of 30 cm.