연구에서는 두족류의 생식생태를 이해하기 위하여 우리나라 주요 두족류인 살오징어 Todarodes pacificus 수컷의 생식기관과 정포의 미세해부학적 구조를 기재하였다. 살오징어는 자웅이체로 외투막에 투과되는 생식기관의 색과 교접완을 통하여 암, 수를 구분할 수 있는 성 적이형을 가진다. 수컷 생식기관은 정소, 1차 수정관, 정포선, 정포낭, 2차 수정관으로 구성된다. 살오징어의 수컷은 정포 형성기관인 정포선과 같은 특수화된 생식기관을 가진다. 정소는 조직 학적으로 정세관형이었다. 1차 수정관은 정소의 후방부터 정포선까지 연결된 가늘고 긴 역삼 각형의 용수철 형태였다. 내부에는 H-E 염색에서 호염기성으로 반응하는 정자가 가득 차 있었 다. 정포선은 1차 수정관과 정포낭에 연결된 불규칙한 타원형으로 내부에는 다수의 관상선이 존재하였다. 정포낭은 정포선과 2차 수정관 사이에 위치하는 관 구조로 내강에서는 다수의 정 포가 확인되었다. 2차 수정관은 정포낭의 후방부에 연결되며, 내부에 정포를 갖고 있었다. 정포 는 길이 약 22 mm의 길고 투명한 관 형태로 내부에는 정자 덩어리를 갖고 있었다.

Lactococcus garvieae is a Gram-positive cocci that has been known to be a fish pathogen, and considered as a low virulence organism rarely associated with human infection. We report a case of acute cholangitis with common bile duct (CBD) stone and bacteremia by L. garvieae bacteremia in a 70-year-old male. The patient presented with epigastric pain and was diagnosed with two CBD stones. Blood culture obtained prior to empiric antimicrobial therapy with ceftizoxime sodium showed growth with Escherichia coli and L. garvieae. The bacteria were confirmed by matrix-assisted desorption/ionization time-of-flight mass spectrometry. Initial attempt at endoscopic biliary drainage failed, and the patient underwent percutaneous transhepatic biliary drainage and subsequent stone removal. He occasionally ingested raw fish and had a history of gastric ulcer with acid suppression therapy, which could be possible risk factors for L. garvieae infection. This is the first case of L. garvieae bacteremia in acute cholangitis.

RCEP will have a significant impact on ASEAN, China and other contracting parties, significantly enhancing the cooperative levels between ASEAN and other essential economies in the region. It can develop the manufacturing industry in ASEAN and China with higher quality. First of all, this study used the Strengths (S), Weaknesses (W), Opportunities (O) and Threats (T) (SWOT) model to analyze the specific impacts of China’s participation in RCEP on the development of ASEAN’s manufacturing industry. Subsequently, strategic recommendations were put forward for the high-quality development of ASEAN’s manufacturing industry under the RCEP cooperation mechanism from four aspects of SO,WO, ST and WT. As the signing of RCEP provides an excellent development opportunity, the ASEAN member countries should carry out deeper cooperation with China; create new strengths for high-quality development of the manufacturing industry; erect a closer regional industrial chain and the supply chain; and promote the realization of a higher level of regional economic integration between ASEAN and China.

The Army, Navy, and Air Force are currently making various efforts to apply defense IoT technology by reflecting the characteristics of each military. However, there are concerns that comprehensive collection, management, and analysis may be limited because each military has no overlapping system or guaranteed interoperability of data, and there are inefficient aspects in terms of using and investing a limited defense budget. In this study, evaluation items and priorities for pilot projects were selected by applying Delphi technique and AHP method to determine which projects are preferentially effective when commonly applied in terms of Army, Navy, and Air force. As a result of the analysis, the project basis and driving force, project feasibility, performance and ripple effect, redundancy and connection were identified in the order of IoT-based small detachment units and unmanned base construction, intelligent smart unit, smart ground ammunition depot, and smart training management system. According to the comprehensive results reflecting the weights of each evaluation item, the fact that small detachment units and unmanned base construction project are recognized as the first project to be applied to the Army, Navy, and Air Force is a valid approach to be effective while each military is burdened with personnel management because of the reduction of manpower. Through the research results, it is expected that the direction of application to the policy of the defense IoT project can be confirmed in terms of efficient use of limited budgets.

The distributions of common minke whales observed in the East Sea in ten surveys in May of 2003, 2005, 2006, 2007, 2009, 2010, 2012, 2015, 2016 and 2020 were investigated using satellite sea surface temperature (SST) derived from the Moderate Resolution Imaging Spectrometer (MODIS). Most of the minke whales were observed in the waters off the Korean Peninsula at 36-38.5° N, which is expected as the highly productive coastal upwelling area. Yet, no minke whale was observed in 2006 when a relatively larger scale coastal upwelling occurred with SST at 11°C. In 2016 and 2020, the warm water higher than 17°C extended widely in the area, and the minke whales were observed in the offshore waters, deeper than 1,000 m. 87.5% of minke whales observed in May appeared in the SST from 13 to 16°C, and they seemed to avoid relatively high temperatures. This suggests that optimum habitat water temperature of minke whales in May is 13-16°C. The SST in the area had risen 1.67°C from 2003 to 2021, and it was remarkably higher than in other parts of the surrounding areas. The future temperature rising may change the route and timing of the migration of minke whales in the study area.

The purpose of this study is to provide information about annual variations in catch size and changes in reproductive biology in the common octopus, Octopus vulgaris, a commercially important species in Jeju Island. Samples were collected from coastal waters of Jeju Island, Korea by coastal trap fishery from January to November 2021. Octopus vulgaris have been decreasing in this region since 1984. The mantle length (ML) ranged from 4.5 to 17.8 cm and body weight (BW) ranged form 88.5 to 2,657.5 g. A χ 2 -test revealed that the number of males was significantly greater than females (χ 2 = 32.712, df = 10, P<0.05). Mature females were found from January to July and male occurred January to August. The gonadosomatic index value was higher from July to August than other months. The relationship between mantle length and body weight was BW = 2.4527ML 2.3139 (female) and BW = 2.6785ML 2.3159 (male). At 50% group maturity, female and male average weight was estimated to be 554.7 g and 330.6 g, respectively.

As the largest written Chinese dictionary in the Joseon Dynasty, “Gujin Shilin” contains a wealth of Korean vulgar words. This paper takes the Korean Kanji Words in “Gujin Shilin” as an example, analyzes the Korean common characters used in the entry, and summarizes the characteristics of the common characters in the inheritance of “Liushu”, such as associative compounds, pictophonetic characters, and phonetic loan characters, as well as the simplification of the form, the symbolization of the components, and the components of the common characters. The variation law of functionalization and reconstruction of pronunciation and meaning is beneficial to the research on the spread and development of popular characters outside the territory.

In this study, the effects of fuel injection pressure changed from 45 to 65 MPa on combustion and emission characteristics were investigated in a common rail direct injection (CRDI) diesel engine fueled with diesel and palm oil biodiesel blends. The engine speed and engine load were controlled at constant 1700rpm and 100Nm, respectively. The tested fuel were PBD20 (20 vol.% palm oil biodiesel blended with 80 vol.% diesel fuel). The main and pilot injection timing was fixed at 3.5°CA BTDC and 27°CA BTDC (before top dead center), respectively. The experimental results show that the combustion pressure and heat release rate increased. In addition, the indicated mean effective pressure (IMEP) and maximum combustion pressure increased with an increase of the fuel injection pressure. Hydrocarbon (HC), smoke opacity and carbon monoxide (CO) decreased, but oxides of nitrogen (NOx) emissions increased as fuel injection pressure increased.

As one of the earliest Buddhist scripture classics, the “Faju Sutra” adopts the form of chanting, and the content is plain and simple. Ganbo 001 “Faju Sutra” contains two parts, “Dao Heng Pin” and “Ni Huan Pin”. This article uses this manuscript as the research object, and divides its glyphs into parts to describe the glyph features of this manuscript. According to Huang Zheng’s “Dunhuang Vulgar Characters Dictionary” (2nd edition), the classification method of the common characters is carried out to study the classification of common characters. At the same time intercept the glyphs that have not been recorded by the predecessors and make a supplement to the “Dunhuang Vulgar Characters Dictionary”.

By measuring the buoyant force of common water hyacinths for common water hyacinth cultivation facilities, the mean buoyant force per common water hyacinths weight was calculated to be 11.67N/㎏ in the measurement performed based on manpower and 18.28N/㎏ in the measurement performed based on a motor. An experiment on dragging force per dragging speed according to the dragging weight was also conducted, and the experimental result verified that the dragging force increased as the dragging weight and speed increased. Moreover, the dragging force per the dragging weight according to the dragging speed was measured. Through an experiment on dragging common water hyacinths in a reservoir, it was confirmed that common water hyacinths cannot be dragged at a dragging speed of 0.036㎧ or higher owing to increased water resistance. Under the condition of the dragging weight set as 50㎏, a dragging force per unit weight of the common water hyacinth was calculated to be 2.62N/㎏ when the dragging bar was 3m in length and 2.94N/㎏ when the dragging bar was 6m in length. Under the condition when the dragging weight was set as 100㎏, the dragging force per unit weight of the common water hyacinth was calculated to be 1.50N/㎏ when the dragging bar was 3m in length and 2.13N/㎏ when the dragging bar was 6m in length. Under the condition when the dragging weight was set as 400㎏, the dragging force per unit weight of the common water hyacinth was calculated to be 0.8N/㎏ when the dragging bar was 3m in length and 5.43N/㎏ when the dragging bar was 6m in length. It was evaluated that the dragging force per unit weight of the common water hyacinth calculated in this study can be effectively applied as data for designing dragging equipment used to drag common water hyacinths in a reservoir.

총담관으로의 클립 이동은 복강경 수술의 드문 합병증이다. 저자들은 4년 전 복강경 담낭절제술과 복강경 총담관탐색술을 동시에 받은 66세 남자에서 Hem-o-lok 클립 이동으로 인한 담관 결석 1예를 문헌고찰과 함께 보고하고자 한다. 상복부 통증을 주소로 내원한 환자의 복부 전산화단층촬영에서 담관의 확장과 다량의 담관 결석 및 담관을 침범한 이물질이 의심되었다. 내시경역행담췌관조영술을 하여 다량의 담관 결석과 함께 이물질을 제거하였다. 이물질의 정체는 Hem-o-lok clip이었다. 복강경 담낭절제술과 복강경 총담관탐색술을 받은 환자가 상복부 통증을 호소한다면, 드물지만, 클립 이동에 의한 담관 결석 가능성도 염두에 두어야 한다.

우리나라의 생물상 52,628종의 35.4%를 차지하는 곤충 18,638종의 국명 유형을 크게 11개(색깔, 크기, 모양, 식물, 위치, 생태, 외국어, 사람이름, 고유, 생리, 긍정·부정)범주로 구분하고, 그 뜻은 무엇인지를 조사하였다. 그 중 인종차별, 장애 및 생김새의 차별, 지역 차별 등의 혐오표현이 사용된 유형 506개에 대해 심층적으로 분석하여, 해당 표현의 본 뜻과 함께 향후 사용할 만한 대체 용어를 제시하였다. 더불어 일본어 표현(일본어, 일본인 이름, 일본 지명 등)이 사용된 유형 508개에 대해 분석하여, 세부 유형을 밝히고 해당 생물종의 국명의 사용이 적절하지 않다고 판단되는 경우에 대체 용어를 제시하였다.

This paper studied the origin of Myeongnyundang(明倫堂), the common name of the main lecture halls at confucian schools in ancient China. Through an extensive investigation of local chronicles, biographies, decrees and construction essays, it found the first Myeongnyundang were titled on the main hall of a local school in the early Southern Song(南宋) period, and it might become the most popular name due to Zhuxi (朱熹), a famous confucian scholar in the Southern Song dynasty. In Yuan(元) period, it almost become the fixed name for the main lecture hall at local confucian schools, and even the official government documents began to use it as a common noun since the beginning of Ming(明) dynasty.