본 연구는 식물 형태 및 성장 지표를 기반으로 친황다오 해안지역의 10가지 향토식물의 내염성을 평가 하여 내염성 식물의 육종 및 정원 적용에 대한 참고 자료를 제공하기 위해 시도되었다. 10종의 토종식물 묘목을 0.0%, 0.2%, 0.4%, 0.6%, 0.8%, 1.0% NaCl 용액으로 물 배양기에 스트레스를 가하여 식물의 높은 성장 스트레스 지수, 염해지수, 염해율, 생존율을 계산하여 내염성 평가를 진행하였다. 그 결과 염분 스 트레스는 친황다오 해안지역에서 10종의 토종 식물의 성장을 다양한 정도로 억제했으며, 염분 농도가 증가함에 따라 식물의 높은 성장 스트레스 지수, 염분 손상 지수 및 염분 손상 비율은 증가하는 경향을 보였고 생존율은 전반적으로 감소하는 경향을 보였다. 식물에 따라 염분 스트레스에 대한 반응 정도가 다르며, 클러스터 분석과 소속 함수 분석을 통해 친황다오 해안지역의 10가지 향토식물은 극내염성인 뜰보리수(Elaeagnus multiflora), 고내염성 족제비싸리(Amorpha fruticosa), 용버들(Salix matsudana), 광대 싸리(Flueggea suffruticosa), 중내염성 호비수리(Lespedeza davurica), 아까시나무(Robinia pseudoacacia) 그리고 민감식물인 장구밥나무(Grewia biloba var. parviflora), 모감주나무(Koelreuteria paniculata.), 좀목 형(Vitex negundo var. heterophylla) 그리고 싸리(Lespedeza bicolor) 등 4개 유형의 내염성 식물군으로 나눌 수 있다. 이중 종합평가는 1위를 차지한 뜰보리수는 염습지 등 해안지역의 조경재료로 매우 탁월한 것으 로 밝혀졌다.

Over 350 species of Stathmopodidae have been reported worldwide, but due to their morphological similarities, there are many difficulties in species identification. To address these issues, various methods including larval, behavioral ecology, molecular techniques, and others have been utilized. In this study, we compared the resistance to pressure based on wing venation, which has not been extensively covered before, to further elucidate the differences between species. Type species, and one species from the genus reported in Korea, this study utilized Fusion 360 to create 3D models and visually represented resistance under the same pressure with colors. Colors derived from simulation results are extracted for trend analysis using PCA (Principal Component Analysis), and differences between groups formed through K-means clustering are analyzed.

Efficient Li-ion transport in anode materials is paramount for electric vehicles (EVs) and energy storage systems. The rapid charging demands of EVs can lead capacity decay at high charging rate. To overcome this challenge, we focus on graphite geometric characteristics that effect to interparticle space. We interpret the correlation between the utilization of the electrode and the interparticle space where solvated Li-ion transports in liquid electrolyte. To introduce variability into this space, two main coke precursors, coal cokes and petroleum cokes, were prepared and further categorized as normal cokes and needle cokes. Manufactured graphite samples were observed with distinct geometric characteristics. In this study, investigates the impact of these geometric variations on electrochemical performance, emphasizing rate capability and cycle stability during fast charging. By analyzing the transport properties of electrochemical species within these graphite samples, we reveal the critical role of morphology in mitigating concentration polarization and side reaction, such as Li-plating. These findings offer promising contribution for the development of advanced anode materials, in fast-charging condition in Li-ion.

The morphological features of germling cells were examined to identify an unspecified resting cyst (described as Cochlodinium cf. polykrikoides-like resting cyst) in the Korean coastal area. LSU rRNA gene sequences were also obtained from a strain established from the germling cells. The resting cysts isolated from Korean coastal sediment were characterized as being brown in color, having a large dark-red body, and fibrous lobed ornaments. The germling cells were ellipsoidal with an irregular outline and had an open comma-shaped ASC (apical structure complex), a wide and deep cingulum, and a deep sulcus. These morphological features were consistent with those of previously described harmful dinoflagellate Pseudocochlodinium profundisulcus. The molecular phylogeny revealed that the germling cells and P. profundisulcus were conspecific. Based on these morphological and phylogenetic data, this study documents the occurrence of P. profundisulcus in a Korean coastal area for the first time.

This study investigates the behavior of bentonite, used as a buffer material in deep geological disposal systems, in the context of pore morphology under the influence of field-collected groundwater conditions. The bentonite was processed into block form using cold isostatic press (CIP) and subsequently analyzed for its pore morphology in situ using synchrotron X-ray computed tomography (CT) within the field-collected groundwater environment. Bentonite buffers play a critical role in deep geological disposal systems by preventing contact between disposal containers and groundwater. Bentonite typically exhibits swelling upon contact with water, forming few layers of water molecules between its structural layers. However, the presence of ions such as K+ and Cl- can lead to a sharp reduction in swelling pressure. Loss of swelling pressure could negatively impact the integrity of future deep geological disposal systems, making its assessment crucial. This study involves processing various types of bentonite, including natural Na-type bentonite, into block forms and subjecting them to exposure in both deionized water and field-collected groundwater conditions. Internal pore morphology changes were measured using Xray CT technology.

Rotylenchus pini Mamiya, 1968 was reported from rhizospheric soils of Zoysia japonica in Korea. Females and males of the characterized population conform to the original species description from Japan and also to other subsequent species descriptions with variations in a few details in morphometrics including the existence of pharyngeal gland overlap in some specimen. Bayesian analysis of all the three DNA markers consistently grouped R. pini together with Rotylenchus species including R. zhongshanensis, a morphologically close species. Additionally, the newly obtained sequences of R. pini were found to be almost identical to the sequences assigned to Rotylenchus aff. devonensis in GenBank. These Rotylenchus aff. devonensis isolates might be representatives of R. pini populations. The current and previous phylogenetic studies supported by the recorded morphological plasticity within populations of the genus validate the proposed synonymy of Pararotylenchus with Rotylenchus.

In Korea, both Sympetrum depressiusculum Sélys, 1841 (Odonata: Libellulidae) and Sympetrum frequens Sélys, 1883 are recorded. However, the identity of Korean populations and the validity of listing the two species have not yet been settled. In this study, we collected 74 individuals from Kroea, Russia, the Netherlands, and Japan. These were sequenced for COI, 16S rRNA, and ITS region. Major morphological characters and phylogenetic, network, and structure analyses all consistently suggest that Korean populations form a single species. Consequently, it could be valid to treat Korean populations as one species, S. depressiusculum, by applying the senior name.

As a result of our taxonomic study of the genus Epistrophe (Walker) in Korea, we recognized a total of 16 species including seven putative new species (code names are temporarily given from A to F). We also conducted a DNA barcoding analysis of 25 nominal species and 130 samples of Epistrophe. In our barcoding analysis, despite insufficient bootstrap support, Epistrophe formed a cluster with two genera, Epistrophella and Leucozona, topologically supporting their close relationships. Our analysis also showed some interesting results worthy of attention: First, at least two distinct cryptic species were found within the E. grossulariae cluster. Second, the taxon identified as E. nitidicollis seems to represent at least three distinct species. Third, three BOLD-deposited European samples listed as E. olgae showed almost identical barcode sequences with the European E. nitidicollis.

Laser-induced graphene (LIG) uses a CO2 infrared laser scriber for transforming specific polymer substrates into porous graphene. This technique is simple, scalable, low-cost, free of chemicals, and produces a 3D graphene for applications across many fields. However, the resulting 3D graphene is highly sensitive to the lasing parameters used in their production. Here, we report the effects of power, raster speed, number of lasing passes (with and without spot overlapping) on the resulting LIG structure, morphology, and sheet resistance, using a polyimide (PI) substrate. We find that the number of lasing passes, laser spot overlapping and brand of PI used had a strong influence on the quality of the LIG, measured in terms of the IG/ ID and I2D Raman bands and sheet resistance. Increasing number of passes and overlapping of laser spots led to increased LIG pore sizes, larger graphene scales, and reduced sheet resistance. Furthermore, the over-the-counter desktop CO2 laser engraving unit used introduced additional restrictions that limited the quality of the LIG produced, particularly due to inconsistent control of the laser scribing speed and a poor thermal management of the laser unit.