Dual-isotope imaging method for Actinium-225 and Bismuth-213 using alpha imaging detector.

Recently, Ac has received considerable attention for its use in targeted alpha therapy because it has a relatively long half-life and yields four more alpha-particles from the daughter nuclides. The performance evaluation should separately assess the distribution of Ac and Bi because daughter nuclides, including Bi, can cause renal toxicity, which may hinder the widespread use of Ac for targeted alpha therapy. In this study, we describe and validate a spectrum decomposition method for dual-isotope imaging of Ac and Bi using an alpha imaging detector.

Two new species of Smirnov, 1946 (Copepoda, Harpacticoida, Aegisthidae) from the Yellow Sea, Korea.

Two new species, and , are described in detail with illustrations based on females from the Korean Yellow Sea. These species lacking the fourth leg endopod belong to the group, one of two species groups within the genus Smirnov, 1946. Both species can be distinguished from each other by the surface ornamentation of the cephalothorax, shape of the rostrum tip, antennule segments, armature formula of thoracic legs 1-4, and length ratio of the caudal rami.

Rechargeable Li-ion full batteries based on one-dimensional Li-rich LiMnNiO cathode and nitrogen-doped carbon-coated NiO anode materials.

To meet the increasing requirements of lithium-ion batteries (LIBs) as energy sources for mobile electronic devices and electric vehicles, great efforts are being made to develop cathode and anode materials with high specific capacity and lifetime stability. Herein, we report a Li-rich one-dimensional (1D) LiMnNiO (0.3LiMnO·0.

A new species of the genus Lang, 1936 (Copepoda, Harpacticoida, Cletodidae) from South Korea.

Background: Marine benthic harpacticoid copepods are poorly known in Korea due to the difficulty in obtaining specimens. Currently, the genus Lang, 1936, which is known to occur in subtidal sediments, has not been reported in this area so far. During surveys on the subtidal meiofauna, we found a new species of from several subtidal muddy sediments in the Yellow Sea and South Sea.

Taxonomic review of the genus Sars (Copepoda, Harpacticoida, Cylindropsyllidae), with (re)descriptions of two species from the Far East.

The taxonomic concept of the genus Sars, 1909 is uncertain because none of the synapomorphies for the species of are defined. Detailed comparison of previous records of (T. Scott, 1892) from different localities reveals that this species represents a species complex composed of two species, .

Two new temporary ectoparasitic isopods (Cymothoida: Cymothooidea) from Korean waters with a note on geographical distributions of Leach, 1818 and Leach, 1814.

Two new species of temporary ectoparasitic isopods, and , are reported from the southern Islands of the Korean Peninsula. is distinguishable from its related species by the following characteristics: (1) laterally stepped rostrum; (2) separated eyes; (3) propodal blade having eight robust setae; and (4) merus having four or five blunt robust setae in pereopods 1-3. differs from its congeners by the combination of the following characteristics: (1) body covered with numerous tubercles and setae, (2) cephalon having tooth-like paraocular ornamentations; and (3) frontal border having two inferior frontolateral processes.

Complete Genome Sequence of a Sulfur-Oxidizing Bacterium, Alcaligenes faecalis Strain NLF5-7, Isolated from Livestock Wastewater.

The complete genome sequence of Alcaligenes faecalis strain NLF5-7, which was isolated from livestock wastewater, is reported. The genome of strain NLF5-7 contains genes for assimilatory sulfate reduction, dissimilatory sulfate reduction and oxidation, and an SOX system, based on its functional genetic characteristics.

Draft Genome Sequence of a Sulfur-Oxidizing Bacterium, Aquamicrobium lusatiense NLF2-7, Isolated from Livestock Wastewater.

Here, we report the draft genome sequence of Aquamicrobium lusatiense NLF2-7, a Gram-negative, aerobic, non-flagellum-forming, rod-shaped bacterium that was isolated from livestock wastewater in South Korea. The assembled genome sequence is 5,201,486 bp, with 4,972 protein-coding sequences in 12 contigs, and possess the genes for the sulfur oxidation pathway.

The microbial communities (bacteria, algae, zooplankton, and fungi) improved biofloc technology including the nitrogen-related material cycle in farms.

Microbes are essential in biofloc technology for controlling nitrogen levels in water. The composition and function of microorganisms with biofloc systems were reported; however, data on microorganisms other than bacteria, such as algae (which are essential in the nitrogen cycle) and zooplankton (which are bacterial and algal predators), remain limited. The microbial communities (including bacteria, algae, zooplankton, and fungi) were investigated in shrimp farms using biofloc technology.

Gene Expression Analyses of Mutant (Enokitake Mushroom) with Clogging Phenomenon.

Regulation of proper gene expression is important for cellular and organismal survival, maintenance, and growth. Abnormal gene expression, even for a single critical gene, can thwart cellular integrity and normal physiology to cause diseases, aging, and death. Therefore, gene expression profiling serves as a powerful tool to understand the pathology of diseases and to cure them.

Description of two new janirid isopods (Isopoda, Asellota, Janiridae) from Korean waters.

Two janirid isopods, Caecijaera ciliata sp. nov. and Janiralata truncata sp.

Two new species of the genus Koehler, 1885 (Isopoda, Asellota, Joeropsididae) from Korean waters.

Two new species, and are reported from South Korea. can be identified by the following character states: whole body has dark brown chromatophores dorsally, lateral margins of the cephalon are smooth and narrowing anteriorly, and basis of pereopods has serrated cuticular scales superiorly. can be identified by the following character states: the cephalon, pereonite 4, and pleotelson have dark brown chromatophores dorsally, lateral margins of the cephalon are smooth and parallel each other, and flagellar article 1 of the antenna is swollen and semi-circular in shape.

Electronic Structure Modulation of Ag S by Vacancy Engineering for Efficient Bacterial Infection.

Vacancy engineering can modulate the electronic structure of the material and thus contribute to the formation of coordination unsaturated sites, which makes it easier to act on the substrate. Herein, Ag S and Ag S-100, which mainly have vacancy associates V and V , respectively, are prepared and characterized by positron annihilation spectroscopy. Both experimental and theoretical calculation results indicate that Ag S-100 exhibits excellent antibacterial activity due to its appropriate bandgap and stronger bacteria-binding ability, which endow it with a superior antibacterial activity compared to Ag S in the absence of light.

First report of the genus (Copepoda, Harpacticoida, Ancorabolidae) in South Korea, with descriptions of three new species.

We report the occurrence of the genus George, Glatzel & Schröder, 2019 in Korean waters, with descriptions of three new species: sp. nov., .

New records of Pseudotachidiidae from South Korea, including a key to species of the Pseudomesochrinae (Copepoda: Harpacticoida).

Two species of the marine harpacticoid family Pseudotachidiidae (Copepoda) are reported from subtidal sediments in the Southern Sea of Korea. Psammis wellsi sp. nov.

Endophytic Fungi of Salt-Tolerant Plants: Diversity and Ability to Promote Plant Growth.

Bunge, and in the Seocheon salt marsh on the west coast of the Korean Penincula were sampled in order to identify the endophytes inhabiting the roots. A total of 128 endophytic fungal isolates belonging to 31 different genera were identified using the fungal internal transcribed spacer (ITS) regions and the 5.8S ribosomal RNA gene.

SnS Nanosheets for Rapid and Effective Bacteria Sterilization Under Near-infrared Irradiation.

Today, the threat of pathogenic bacterial infection worldwide that leads to the increase of mortality rate strongly demands the development of new antibacterial agents that can kill bacteria quickly and effectively. Although there are a lot of antibacterial agents that have been developed so far, few studies on the antibacterial performance of SnS have been investigated at 808 nm laser. Here, we synthesized SnS nanosheets with strong near-infrared absorption performance and excellent antibacterial performance via a simple solvothermal synthesis route.

Removal of ammonium, phosphate, and sulfonamide antibiotics using alum sludge and low-grade charcoal pellets.

Powder adsorbents perform well due to their large surface area but are difficult to use because of aggregation and channeling. In this study, pelletization of adsorbents was proposed as a solution to these operating problems. A three-component mixture was extruded into pellets and calcined under air or nitrogen conditions The pellet adsorbent removed 47, 71, 97, and 72% of ammonium, phosphate, sulfathiazole, and sulfamethoxazole, respectively.

An X-ray spectrum estimation method from transmission measurement combined with scatter correction.

Purpose: Conventional x-ray spectrum estimation methods from transmission measurement often lead to inaccurate results when extensive x-ray scatter is present in the measured projection. This study aims to apply the weighted L1-norm scatter correction algorithm in spectrum estimation for reducing residual differences between the estimated and true spectrum.

Method: The scatter correction algorithm is based on a simple radiographic scattering model where the intensity of scattered x-ray is directly estimated from a transmission measurement.

Pyrosequencing and Taxonomic Composition of the Fungal Community from Soil of in Gyeongju.

is an ectomycorrhizal fungus that has a symbiotic relationship with the root of . Soil microbial communities greatly affect the growth of , however, few studies have examined the characteristics of these communities. In the present study, we analyzed soil fungal communities from Gyeongju and Yeongdeok using metagenomic pyrosequencing to investigate differences in fungal species diversity, richness, and taxonomic composition between the soil under fruiting bodies (Sample 2) and soil where the fairy ring of was no longer present (Sample 1).

sp. nov. from Ulleung Island in Korea.

In a study of the fungal diversity on Ulleung Island in Korea, three novel strains of were isolated. Different sites on Ulleung Island were selected for collecting endophytic fungi, and three endophytic fungal strains showed unique morphological characteristics. DNA sequence of the internal transcribed spacer, -tubulin, calmodulin, and RNA polymerase II second largest subunit regions of the strains were analyzed and they showed unique taxonomic position from the other species of section .

Diversity and Plant Growth Promotion of Fungal Endophytes in Five Halophytes from the Buan Salt Marsh.

The diversity and plant growth-promoting ability of fungal endophytes that are associated with five halophytic plant species (, and ) growing in the Buan salt marsh on the west coast of South Korea have been explored. About 188 fungal strains were isolated from these plant samples' roots and were then studied with the use of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2).

Effects of Co-culture on Improved Productivity and Bioresource for Microalgal Biomass Using the Floc-Forming Bacteria .

Bacterial and algal floc formation was induced by inoculating three species of wastewater-derived bacteria (, and ) into algal cultures (). Bacterial and algal flocs formed in algal cultures inoculated with and , and these flocs showed higher sedimentation rates than pure algal culture. The floc formed by (4988.

A new genus and species of Nannopodidae (Crustacea, Copepoda, Harpacticoida) from the Yellow Sea of South Korea.

A new monospecific genus of the family Nannopodidae Brady, 1880 is proposed, based on specimens of both sexes of collected from subtidal sandy sediments in the Yellow Sea of South Korea. The presence of a coxal outer projection on the first to fourth legs and reduction of both rami of the second to fourth legs in this new genus show a clear relationship with a clade, which is characterised by the modified thoracopods for burrowing ability, comprising Poppe, 1884, Wells, 1985, George, 2002, Huys & Kihara, 2010 and Corgosinho, 2012 in Nannopodidae. Within this clade, is most closely related to George, 2002 in having the prehensile endopod in the first leg, broad intercoxal sclerite on the second to fourth legs and the female fifth leg being composed of separate exopod and baseoendopod, but is distinguished by the absence of mandibular exopod, two-segmented mandibular endopod, presence of four setae on the distal exopodal segment of the first leg, and fusion of the intercoxal sclerite to the coxae in the third and fourth legs.

Five new subterranean amphipods of the genus from Korea (Crustacea, Amphipoda, Pseudocrangonyctidae).

Although the majority of the species belonging to the genus Akatsuka & Komai, 1922 are found among the subterranean fauna of eastern Asia, the taxonomic knowledge is very poor and only four species have been recorded in Korea. In this study, the morphology of the stygobitic pseudocrangonyctid amphipods from Korean subterranean waters was examined and five new species were identified: has a characteristic emarginated posteroventral margin of epimeral plate 3; differs from other pseudocrangonyctids by the slender and elongated pereopods and more produced posterodistal corner of epimeral plate 3. shows the expanded peduncular articles and a reduced flagellum of antenna 2.