Schlumbergera truncata absorbs CO2 through its mature phylloclades during the night, and can use a substantial amount of CO2 without requiring ventilation. This study investigated the growth and photosynthetic responses of S. truncata ‘Red Candle’ at two CO2 levels—ambient (≈ 400 μmol･mol-1) and elevated (≈ 1000 μmol･mol-1). At 0–8 weeks after treatment (WAT), width and length of mature phylloclade and length of immature phylloclade did not differ significantly among the CO2 treatments. At 4–8 WAT, number of branches and phylloclades were significantly greater in plants grown under ambient CO2 than those under elevated CO2. Net CO2 uptake was highest in mature phylloclades of plants grown under ambient and elevated CO2 regimes at night, at 2.51 and 1.30 μmol·CO2·m-2·s-1, respectively. However, no statistically significant variation was observed at 6 WAT, and stomatal conductance was significantly affected only by CO2 uptake time at 6 and 8 WAT. Water-use efficiency of mature and immature phylloclades at night increased with increase in CO2 levels (r = 0.7462 and 0.9312, respectively). At 123 days after treatment, plants grown under elevated CO2 had 82.7 floral buds, compared to 72.1 buds in those under ambient CO2. However, this difference was not statistically significant. Moreover, S. truncata grown under elevated CO2 exhibited decreased growth and photosynthesis, whereas the number of floral buds did not exhibit any significant differences among the treatments.

본 연구는 민간시장의 절화 유통 현황을 조사하여 국내 절 화 시장 유통 및 판매의 기초 자료로 제공하고자 수행하였다. 조사 기간은 2022년 5월부터 10월까지이며, 민간시장 내 판 매 점포 수, 취급 품목, 수입국 및 품목 등을 비교 및 분석하 였다. 민간시장은 서울 서초구 반포동에 위치한 강남터미널 꽃시장을 대상으로 판매 품목 및 수입 국가 등을 조사하였고, 비교 대상인 공영시장의 경우 한국농수산식품유통공사 화훼 유통정보에서 제공되는 양재동 화훼공판장 거래 품목을 조사 하였다. 조사 결과, 민간시장의 월별 절화 판매 점포 수는 평 균 143개였다. 민간시장에서는 5월을 제외하고 장미 판매 매 장이 가장 많았다. 5월에는 카네이션 판매 매장이 가장 많았 으며 장미, 리시안셔스, 거베라가 그 뒤를 이었다. 민간시장 점포 내 수입 품목의 원산지는 호주, 중국, 콜롬비아, 이스라 엘, 이탈리아, 일본, 네덜란드, 페루, 남아프리카 공화국, 미 국, 베트남 등으로 조사되었다. 취급 품목은 민간시장이 69개 로 공영시장 18개에 비해 약 3.8배 많았으며, 이는 민간시장에서 수입 절화가 더 많이 유통되고 있음을 시사한다. 민간시 장은 공영시장과 달리 유통 정보를 알 수 있는 시스템이 없어 소비자들이 제품의 원산지, 품질, 가격 등을 파악하기 어렵다. 따라서, 민간시장의 절화 유통 정보를 소비자들에게 정확히 제공할 필요가 있으며, 이를 통한 투명한 거래 제공 및 소비자 의 신뢰도를 높이는 것이 중요하다.

기후 변화의 가속화로 국내 제주 및 남부 지방을 중심으로 열대 및 아열대 작물의 재배 및 소비가 증가하는 추세이다.오크라는 식용적 가치가 있을 뿐만 아니라, 품종별 고유의 꼬 투리와 잎의 색은 관상적 가치가 있어 조경 식물로 많이 사용 되고 있다. 본 연구는 도심 내 옥상 온실에 관상식물인 오크 라를 도입하기 위해 피트모스와 펄라이트 비율에 따른 기초 종자 발아 및 육묘기 실험을 진행하였다. 피트모스와 펄라이 트 비율은 PT:PL=1:2, 1:1, 2:1, 4:1 네 가지로 조성하였다. 발 아율은 파종 후 7일차부터 다른 처리구에 비해 피트모스:펄라 이트=1:2의 처리구에서 가장 높았다. 파종 후 28일차와 70일 차에 줄기길이, 경경, 뿌리길이, 지상부와 지하부의 생체중과 건물중 그리고 엽면적은 피트모스:펄라이트=1:2 처리구에서 가장 높았다. 그러나, 파종 후 56일 이후부터 엽수는 피트모 스:펄라이트=1:2, 2:1, 4:1 처리구에서 감소하였다. 피트모스: 펄라이트=1:1, 2:1, 4:1 처리구에서 식물이 필요로 하는 피트 모스의 비율이 지나치게 높아 높은 피트모스 비율로 인하여 수분함수량이 과도하게 높아 식물이 고사한 것으로 판단된다. 따라서 오크라를 관상식물로 활용하기 위해서는 피트모스와 펄라이트를 1:2로 혼합한 배지가 가장 적합하다.

This study aimed to analyze a high-performance liquid chromatography (HPLC) separation using a pentafluorophenyl column of parent drug hydroxychloroquine (HCQ) and its active metabolite, desethylhydroxchloroquine (DHCQ) applying to determine bioequivalence of two different formulations administered to patients. A rapid, simple, sensitive and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method has been developed and validated for bioanalysis of HCQ and its metabolite DHCQ in human whole blood using deuterium derivative hydroxychloroquine-D4 as an internal standard (IS). A triple-quadrupole mass spectrometer was operated using electrospray ionization in multiple reaction monitoring (MRM) mode. Sample preparation involves a two-step precipitation of protein techniques. The removed protein blood samples were chromatographed on a pentafluorophenyl (PFP) column (50 mm × 4.6 mm, 2.6 μm) with a mobile phase (ammonium formate solution containing dilute formic acid) in an isocratic mode at a flow rate of 0.45 mL/min. The standard curves were found to be linear in the range of 2 – 500 ng/mL for HCQ; 2 – 2,000 ng/mL for DHCQ in spite of lacking a highly sensitive MS spectrometry system. Results of intra- and inter-day precision and accuracy were within acceptable limits. A run time of 2.2 min for HCQ and 2.03 min for DHCQ in blood sample facilitated the analysis of more than 300 human whole blood samples per day. Taken together, we concluded that the assay developed herein represents a highly qualified technology for the quantification of HCQ in human whole blood for a parallel design bioequivalence study in a healthy male.

Composite resins are developed as restorative materials to improve esthetics and mechanical properties. To improve the physical properties of resin material, resin filler have to be added. However, no imaging method is adopted for resin filler distribution. Optical coherence tomography (OCT) is a optical imaging technique to delineate microscopic structures within biological tissue. The OCT application to dental composites resin and its filler is not described yet. So, this new and advanced optical method is needed for clinical application for evaluation of dental composite resin. To analyze the spatial distribution of dental composite resin and to evaluate the resin restoration in cavity, frequency domain optical coherence tomography (FD-OCT) was used for their analysis. Resin restored tooth was prepared. For morphological observation, serially sectioned teeth, conventional X-ray taking and micro computed-tomography (CT) images were compared with OCT images. The experiment has done to evaluate the success of the resin restoration using 3 dimensional structure OCT image. In this research, OCT is evaluated as a new technique to image resin restoration. The evaluation of resin restored tooth was performed by OCT. Inappropriate restoration such as marginal adaptation, large porosities, internal integrity and poor contour could be detected. Resin filler also could be checked by OCT. The distribution, number, regularity and size of resin filler can be differentiated from several commercial products. Considering the characteristics of the OCT, it can be used to evaluate the defects of resin restoration, resin filler distribution, and internal integrity between resin material and tooth structure. The OCT can be considered to be a new and advanced method for the evaluation of resin restorations.

The basic instrument for oral hygiene is toothbrush. Many patents that are announced to enhance efficiency and convenience by changing shape and using new material. There are also patents regarding its various functions. This study, the purpose of study, was surveyed the toothbrush patents from 2005 to 2014. The patent search was done in site 'kipris' using keyword ‘toothbrush’. Among sorts of administrative measure, enrollment and extinction patents was searched, followed by classified patents into its shape, materials, function and electronic toothbrush. For the patents with function, detailed analysis was done. Total numbers of toothbrush patents decreased in 2006 to 2008, lowest in 2008, and steadily increased to 2014. The patents regarding shape was outnumbered material. Shape and material patents could be divided by handle portion and head portion patents, which patents of head portion is more than handle portion. The patents of function could be classified into certain situation or combinate functions to its natural function. Function patents increase with the ratio of total patents. For brush patents, they have a tendence of increase. In addition, from a shape and function, toothbrush patents going to be more variable. It choose small quantity batch production. From a shape of toothbrush, patents regarding head portion are going to increase. And it has a tendency to change the shape rather than the development of materials for efficiency of toothbrushing. Electronic toothbrush will be placed certain position, however, conventional toothbrush also will place large portion by estimating patent number and there be more progressive. Some patents will catch popularity like combination of brush and paste, replacement of brush head, attraction for toothbrushing, and hygiene tooth brush. Also disposable toothbrush and portable toothbrush are getting popularity along with social phenomenon.

Along with toothbrushes, toothpaste has been used for a long time to improve the personal oral hygiene. Toothpaste was firstly introduced to Korea through as a form of powder by the Japanese company Lion Corporation in 1889 and in 1954, the LakHee Chemistry company released Korea’ s first ever tube type cream toothpaste called lucky toothpaste, and afterwards we got to where we are today in terms of toothpaste. As a variety of products are released and customer choices become more diverse, there needs to be a development of toothpaste that can fulfill customers’ needs and requests. Therefore, this study analyzes toothpastes and related patents submitted to the Patent Office from 1962 to June 2015, thereby examining the changes in toothpaste development trends up to the present day. This study was searched using the keyword ‘toothpaste’ in the patent, utility model search engine at Kipris(www.kipris.or.kr), a patent search site, and categorized a total of 2,465 patents, which excluded those rejected by the Patent Office and those unrelated to toothpaste, using titles, full texts of publications and announcements. Research results showed that in the past, from 1960 to 1989, patents related to toothpaste containers took up the highest ratio of 35%. However, after 1990, patents pertaining to toothpaste composites and functionality made up the highest percentage of 54%, and from 2010 to 2015, it occupied 72% of the whole; therefore, we analyzed in detail the patents related to composites and functionality. Taking a look at the objectives and effects of patents having to do with composites and functionality, we found out that from 1964 to June 2015, patents related to Base, a basic component of toothpaste, and those having to do with periodontal disease took up the highest percentages of 25% each, and from 2010~2015 in particular, patents concerning periodontal diseases were submitted 3% more than those about Base. Composites aiming to prevent and treat periodontal diseases can be divided into four different categories, based on components; among those, there were a total of 171 (57%) patents related to living organism and herbal medicine extracts, 107 (36%) patents using compounds, 16 (5%) patents using bamboo salt as well as salt, and 5 (2%) patents using mineral components such as gold, silver. Looking at these investigation results, it can be thought that with the increasing development of toothpaste related to periodontal diseases, there’ s a great amount of interest about toothpaste of effective periodontal disease prevention and treatment purposes. Along with this, we thought that research about how effective periodontal disease toothpastes actually are is also necessary.

Korea represents high suicide rate by poisoning. Especially, since a lot of people died by high concentrated paraquat which has extremely high fatality rate, paraquat sales were prohibited in 2012. We investigated to find out how the prohibition of sales affected occurrence of pesticide poisoned patients and what kinds of influences did it have for severity and death rate. By targeting patients who visited emergency room by pesticide poisoning from 2010 to 2014, we researched insecticides poisoned patients and herbicidal poisoned patients grouped into 9 categories. Before and after 2012, We compared A term (2010, 2011) and B term (2013, 2014)’s pesticide occurrence, especially distribution of herbicide occurrence and compared hospitalization rate, hospitalization period, length of stay in ICU (Intensive Care Unit), severity, and death rate. The number of insecticide patients was 219 (37.4%) and the number of herbicide patients was 367 (62.6%) who visited emergency room in five years and the rate was similar every year. In case of paraquat, there was 70.5% decrease by 105 people for A term and 31 people for B term and increase of double for glyphosate, glufosinate, and other herbicides. The death rate was decreased but hospitalization was increased. There weren’t any difference of rate in ICU admission, intubation and ventilator therapy. By prohibition of using paraquat, the death rate by pesticide poisoning was decreased. However, patients who poisoned by other herbicides were increased, so hospitalization rate increased and there weren’t any difference at patient’s severity rates.

Recently there are increasing numbers of people participating in sports activities. Accordingly, the rate of sports injuries is increasing as well. In this light, this study was conducted to investigate the extent of acute damage and its forms by examining the current state of patients with sports injuries. This research study was conducted between January of 2008 and December of 2010 in Chosun University Hospital through retrospective review of the medical records of patients with sportsrelated injuries. The total number of patients with sports injuries who visited the emergency center was 887. The number of male patients was 726 (81.85%), far more than the number of female patients (18.15%). More than half of the patients, accounting for 419 (47.23%), had injuries on their face; second and common parts, in which injuries occurred, were upper and lower body, accounting for 146 (16.45%) and 193 (21.75%), respectively. The majority of patients did not undergo surgical treatment. Only 113 (12.73%) patients underwent surgical treatment. In addition, more than 80% of them were not hospitalized but 170 of them needed to be hospitalized. Most sports injuries occurred in young male patients. This can interrupt participation in sports activities for a long time and result in lower quality of life. Hence proper preventative measures and scientific treatment methods are needed.