조선 후기 연행사는 청나라 문인들과 필담을 하거나 간찰을 보냈으며, 서예 비첩을 감장(鑒藏)하거나 금석학 교류활동을 활 발히 전개하였다. 본 연구는 이계 홍양호 『이계집』과 관암 홍경모 『관암전서』·『운석외사』에 기록된 서신, 제발, 서문 등을 확인하여 청대 문인 대구형, 기윤, 섭지섭과의 서예 교류 를 주요 연구 범위로 설정하였다. 위 문집과 『동문신교척독 책』과 『두남신교첩』자료를 활용하여 저서, 비첩, 서찰 교류 측면에서 고찰하였다. 또한 홍양호와 홍경모의 학서 소양, 금석 고증 능력, 비첩 감장 원칙을 논술 및 분석하여 교류 의의를 도출하였다. 홍씨 가문은 양국 문인의 가족적인 서예 교류의 대표적 사례이자 견고한 학문적 토대 위에서 진행된 교류를 의 미한다. 양국의 문인들은 필담을 통해 고금의 서예, 금석 학술 에 대해 전면적이고 심도 있는 토론을 전개하였다. 이러한 다 층적인 문화교류는 한·중 서예문화의 발전을 촉진하였다는 점 에서 그 의의가 있다.

The aim of this study was to investigate the effect of isolated lactic acid bacteria (LAB) on the quality of high moisture rye silage. Rye forage (Secale cereale L.) was harvested at the heading stage (27.3% of dry matter (DM)) and cut into approximately 3-5 cm lengths. Then, the forage divided into 4 treatments with different inoculants: 1) No additives (CON); 2) Lactobacillus brevis strain 100D8 at a 1.2 x 105 colony-forming unit (cfu)/g of fresh forage (LBR); 3) Leuconostoc holzapfelii strain 5H4 at a 1.0 x 105 cfu/g of fresh forage (LHO); and 4) Mixture of LBR and LHO (1:1 ratio) applied at a 1.0 x 105 cfu/g of fresh forage (MIX). About 3 kg of forage from each treatment was ensiled into a 20 L mini-bucket silo in quadruplicate for 100 days. After silo opening, silage was collected for analyses of chemical compositions, in vitro nutrient digestibilities, fermentation characteristics, and microbial enumerations. The CON silage had the highest concentrations of neutral detergent fiber and acid detergent fiber (p = 0.006; p = 0.008) and a lowest in vitro DM digestibility (p < 0.001). The pH was highest in CON silage, while lowest in LBR and MIX silages (p < 0.001). The concentrations of ammonia-N, lactate, and acetate were highest in LBR silage (p = 0.008; p < 0.001; p < 0.001). Propionate and butyrate concentrations were highest in CON silage (p = 0.004; p < 0.001). The LAB and yeast counts were higher in CON and LHO silages compare to LBR and MIX silages (p < 0.001). However, the mold did not detect in all treatments. Therefore, this study could conclude that L. brevis 100D8 and Leu. holzapfelii strain 5H4 can improve the digestibility and anti-fungal activity of high moisture rye silage.

To develop mushroom varieties for cultivating at low temperature on oak logs, a strain with a low fruiting body generation temperature was crossed with Di-mon to select for a line with excellent properties. Selection was followed by cultivation testing. From these studies, Heunghwa 1ho was identified. The optimum temperature for cultivating Heunghwa 1ho, was 13.3oC. The fruiting temperature range was 6.4~20.2oC, identical to that of the parent strain. Growth at 25oC for 7 days achieved optimal mycelial growth of 61.9±2.10 mm, superior to growth of the parent strain at this temperature. The cap shape of Heunghwa 1ho was convex, cap diameter was 57.8±8.31 mm, and cap color was brown. Heunghwa 1ho showed similar genetic traits to those of the parental strain. However, dry weight (20.1 kg/m3) and cap diameter and color are superior to those of the parent strain. The 3 year fresh oak mushroom yield was 113.8 kg/m3, superior to the respective yields of the parent strains JMI 10047 and JMI 90021 (92.5 kg/m3 and 66.4 kg/m3).

Pleurotus ostreatus is a globally cultivated mushroom crop. Cap color is a quality factor in P. ostreatus. However, cap color can spontaneously mutate, degrading the quality of the mushroom on the market. Early detection and removal of mutant strains is the best way to maintain the commercial value of the crop. To detect the cap color mutant Gonji7ho, molecular markers were developed based on insertion/deletions (InDels) derived from the comparison of mitogenomes of Gonji7ho and Gonji7hoM mushrooms. Sequencing, assembly, and comparative analysis of the two mitogenomes revealed genome sizes of 73,212 bp and 72,576 bp with 61 and 57 genes or open reading frames (ORFs) in P. ostreatus Gonji7ho and Gonji7hoM, respectively. Fourteen core protein-encoding genes, two rRNA, and 24 tRNA with some OFRs were predicted. Of the 61 genes or OFRs in the wild type, dpo, rpo, and two orf139 were missing (or remnant) in the mutant strain. Molecular markers were developed based on the sequence variations (InDels) between the two mitogenomes. Six polymorphic molecular markers could detect the mutated mitochondria by PCR. These results provide basic knowledge of the mitogenomes of wild-type and mutant P. ostreatus, and can be applied to discriminate mutated mitochondria.

Bullets flying with a light from the back are called “tracers”. Tracers are ignited by the combustion gas of the propellant and emit bright light that allows the shooter to visually trace the flight path. Therefore, tracers mark the firing point for allies to assist shooters to hit target quickly and accurately. Conventional tracers are constructed with a mixture of an oxidizing agent, raw metal, and organic fuel. Upon ignition, the inside of the gun can be easily contaminated by the by-products, which can lead to firearm failure during long-term shooting. Moreover, there is a fire risk such as forest fires due to residual flames at impact site. Therefore, it is necessary to develop non-combustion type luminous material; however, this material must still use the heat generated from the propellant, so-called “thermoluminescence (TL)”. This study aims to compare the TL emission of Dy3+, La3+ and Ho3+ doped MgB4O7 phosphors prepared by solid state reaction. The crystal structures of samples were determined by X-ray diffraction and matched with the standard pattern of MgB4O7. Luminescence of various doses (200 ~ 15,000 Gy) of gamma irradiated Dy3+, La3+ and Ho3+ (at different concentrations of 5, 10, 15 and 20 %) doped MgB4O7 were recorded using a luminance/color meter. The intensity of TL yellowish (CIE x = 0.401 ~ 0.486, y = 0.410 ~ 0.488) emission became stronger as the temperature increased and the total gamma-ray dose increased.

국내 표고 품종 다양화로 버섯산업 경쟁력을 높이고자 ‘참아람’과 청흥버섯영농조합 보유균주인‘E140025’을 이용하여 교잡육종법을 통해 ‘청흥1호’를 육성하였다. 자실체 특성 결과 대조품종 보다 갓직경은 작고, 대길이는 길고, 대가 굵어 개체중이 무거웠다. 초발이기간은 ‘청흥1호’ 24일, ‘설백향’4일, ‘산조701호’ 8일로 발이까지 대조품종보다 20일정도 늦었다. 자실체 수량은 가장적게 나타났지만, 유효수량은 ‘청흥1호’ 6,498 g ‘설백향’ 4,290 g, ‘산조701호’ 5,022 g으로 가장 높았다. URPPrimer를 이용한 다형성검정을 통해 6개의 Primer에서 모본과 다른 PCR 밴드를 확인하였다. 이상의 결과, 재배기 간이 길지만 개체중과 유효수량이 우수한 무포자 신품종을 육성하였다.

표고는 우리나라를 포함한 동북아시아 전역에서 오랫동안 식용으로 애용되고 있는 대중적 버섯으로 맛과 향이 독특하다. 또한 약리적인 효능이 과학적으로 밝혀졌다. 표고는 원목재배와 톱밥재배에 의해 생산되며 원목재배 기 간은 4~5년인데 반해 톱밥재배는 6개월로 재배기간이 짧아 원목재배에서 톱밥재배로 빠르게 전환되고 있다. 특히 산조 701호는 중고온성 품종으로 우리나라의 표고 톱밥 재배 대표적인 여름철 품종으로 재배임가에 널리 알려져 있으며, 임가 소득에 기여하고 있다. 본 연구에서는 표고 톱밥재배 품종 중에서 산조 701호의 육성내력과 다양한 실증시험, 국산품종 보급확대 등 우리나라 표고산업 발전에 기여한 성과를 기술하였다.

신품종 감자 ‘아리랑1호’는 농촌진흥청 국립식량과학원 고령지농업연구소에서 2018년도 육성되었다. ‘아리랑1호’는 ‘Frontier’ 품종을 모본으로 하고 ‘대관1-117호’ 계통을 부본으로 2011년 교배하여, 장일 고온 조건에서 식물체 생육 및 괴경의 형성과 비대가 양호하여 다수확 할 수 있는 계통으로 선발되었다. 중앙아시아(여름재배)와 국내 평난지(강릉, 봄재배) 및 고랭지(대관령, 여름재배)에서 2014~2015년 생산력 검정을 통해 ‘대관1-150호’로 계통명을 부여하고, 2016~2018년 지역 적응성검정 시험을 거쳐 ‘아리랑1호’로 명명하였다. ‘아리랑1 호’의 초형은 반직립형으로서 초세가 강하고 왕성하다. 괴경모 양은 짧은 계란형이며, 괴경 색깔은 표피와 육질부 모두 황색이다. ‘아리랑1호’의 경장은 67.1 cm로 대조품종인 ‘수미’, ‘산테’보다 긴 반면, 경수는 3개 내외로 대조품종과 유사하다. 주당 괴경수는 9.0개로 ‘수미’(5.4개) 보다 많은 반면, ‘산테’ (14.1개)보다 적다. 괴경당 평균 무게와 포기당 총 괴경중은 각 각 96.1 g 및 865 g으로서 대조품종보다 무겁다. 겹둥근무늬병 과 역병에 대하여 중도저항성이며, 바이러스병과 더뎅이병에 있어서는 감수성을 나타낸다. 건조에 대한 저항성은 ‘산테’나 ‘수미’보다 강한 중도저항성으로 평가되었다. 비중과 건물율은 ‘수미’보다 높고 ‘대서’와 유사하며, 감자칩 품질은 ‘대서’와 같이 우수한 것으로 평가된다. ‘아리랑1호’의 단위면적당 상서수량은 국내의 경우 3,360 kg·10a-1으로 ‘수미’ 보다 57% 더 많 고, 중앙아시아에서는 3,070 kg·10a-1으로 ‘산테’ 보다 약 55% 더 많았다. 신품종 감자 ‘아리랑1호’는 장일 고온 건조한 지역에서 기형, 이차생장 등이 적고 다수성을 나타내어 중앙아시아 등 해외 진출에 유망한 품종으로 판단된다.

느타리버섯 곤지7호의 수확 후 CO2 처리에 의한 품질 유지 효과 및 적정 처리 농도를 구명하고자 연구를 수행하였다. 수확한 버섯을 3°C에서 1일간 예냉 후에 CO2 농도 0, 30 및 50%에서 3시간 처리한 다음 20 μm 두께 OPP필름 봉지에 밀봉하여 3°C에 21일 저장하였다. 30% CO2 처리에서 대조직의 경도가 저장 21일까지 높게 유지 되었고, 대조직의 색은 명도(CIE L*값)가 30% CO2 처리 한 느타리버섯이 저장 14일, 21일에 높고 황색도(CIE b* 값)가 저장 2일, 7일에 낮게 나타났으며 외관품위가 저장 7일부터 저장기간 내내 대조구와 50% CO2 처리에 비해 높았으며 3°C 저장 중 17일까지 느타리버섯 곤지7호의 상품성을 유지하였다. 30% CO2 농도로 3시간 처리가 느타리버섯 곤지7호의 저온저장 중 품질 유지기간을 연장할 수 있는 수확 후 처리방법으로 판단되었다.

‘Luckyone 2ho’ is a new orchardgrass (Dactylis glomerata L.) cultivar developed by the National Institue of Animal Science (NIAS) in 2017. To develope the new variety of orchardgrass, 5 superior clones were selected and polycrossed for seed production. The agronomic growth characteristics and forage productivity of ‘Luckyone 2ho’ were examined at Cheonan from 2012 to 2014, and regional trials were conducted in Cheonan, Pheonchang, Jinju and Jeju from 2015 to 2017, respectively. ‘Luckyone 2ho’ showed medium type growth habit in fall, and medium in length of flag leaf and very long upper internode. Plant height of ‘Luckyone 2ho’ was 3 cm less than that of standard cultivar, ‘Potomac’ and heading date was 1 days later than 5th May compared to standard cultivar, ‘Potomac’. Characteristics such as waterlogging and disease resistance of ‘Luckyone 2ho’ were stronger or better than those of standard cultivar, ‘Potomac’, Especially, dry matter yield of ‘Luckyone 2ho’(15,980 kg/ha) increased 9 % compared to that of standard cultivar, ‘Potomac’(14,702 kg/ha). Nutritive values were appeared to be similar in both varieties except in Vitro dry matter digestibility(IVDMD) and crude protein and total digestible nutrients (TDN).

New triple tungstate phosphors NaPbLa(WO4)3:Yb3+/Ho3+ (x = Yb3+/Ho3+ = 7, 8, 9, 10) are successfully fabricated by microwave assisted sol-gel synthesis and their structural and frequency upconversion (UC) characteristics are investigated. The compounds crystallized in the tetragonal space group I41/a and the NaPbLa(WO4)3 host have unit cell parameters a = 5.3927(1) and c = 11.7961(3) Å, V = 343.05(2) Å3, Z = 4. Under excitation at 980 nm, the phosphors have yellowish green emissions, which are derived from the intense 5S2/ 5F4 → 5I8 transitions of Ho3+ ions in the green spectral range and strong 5F5 → 5I8 transitions in the red spectral range. The optimal Yb3+:Ho3+ ratio is revealed to be x = 9, which is attributed to the quenching effect of Ho3+ ions, as indicated by the composition dependence. The UC characteristics are evaluated in detail under consideration of the pump power dependence and Commission Internationale de L'Eclairage chromaticity. The spectroscopic features of Raman spectra are discussed in terms of the superposition of Ho3+ luminescence and vibrational lines. The possibility of controlling the spectral distribution of UC luminescence by the chemical content of tungstate hosts is demonstrated.

This experiment was conducted to breed a very early maturing variety of Italian ryegrass (Lolium multiflorum Lam.) in Grassland and Forage Crops Division, National Institute of Animal Science, RDA, Cheonan 2015-2017. The new variety of Italian ryegrass, ‘Green call 2ho’ is a diploid variety with green in leaf color and has semi-erect growth habit in late autumn and erect growth habit in early spring, ‘Green call 2ho’ was in heading date as a early-maturing variety April 24. Also ‘Green call 2ho’ was narrower by 2 mm in flag leaf width, longer by 2.5 cm in flag leaf length and shorter by 3 cm in plant height than those of the control variety, ‘Florida 80’, respectively. ‘Green call 2ho’ was also thicker by 0.33 mm in stem thickness and strong in winter hardness. Dry matter (DM) yield (11,688 kg/ha) of ‘Green call 2ho’ was 7% higher than that of ‘Florida 80’. Total digestible nutrient (TDN), crude protein (CP) and relative feed value (RFV) of ‘Green call 2ho’ were 61.3 %, 9.8 % and 98.2, respectively which are 2.6, 0.6, and 8.4 % higher, respectively than those of ‘Florida 80’, respectively. Acid detergent fiber (ADF) and neutral detergent fiber (NDF) of ‘Green call 2ho’ were 34.9 and 58.5 % which are 3.3 and 2.7 % lower than those of ‘Florida 80’, respectively.

Along the 3,200km-long coastline, Vietnam has a significant number of seaports, which are relatively large and named as the keys to economic development. However, most ports are relatively small with obsolete facilities and poor supporting services. Among three largest ports countrywide, Ho Chi Minh City seaport has had the highest throughput and productivity per annum of the country for years, assumed the role of the major port in the south, where cargos and containers come and go from all industrial parks in the southern region. Situated on what was the outskirts but is now the outskirts or suburbs of Ho Chi Minh City, it has however shown some drawbacks, i.e., expansion of the port is not an option regardless of the high throughput. Apart from the inadequate infrastructure, ports are facing another setback due to backward pricing. The rapid increase in number of ports also created a “race to the bottom” situation, where Vietnam ports have reduced their price to attract customers. The direct results are lower service quality and an inability to reinvest into port development. Therefore, the restructuring of Ho Chi Minh City seaport system has been launched since 2006 whereby the plan not only resolves the limited size, obsolete facilities and traffic issues, but also becomes more efficient as the new port complex is located conveniently among the region’s industrial parks and export processing zones of Ho Chi Minh City, Binh Duong, Dong Nai, and Ba Ria – Vung Tau. In line with this plan, the paper will mainly aim to provide the outstanding constraints which Ho Chi Minh City seaport system faced, including illogical distribution among ports/terminals regardless the scale, capacity and geographic locations; ineffective and insecured mooring and anchorage buoys; undeveloped logistic services centres and lack of connecting infrastructure. As so, the recommendations for single issue will be provided.

팽이버섯 ‘금향2호’는 2013년도 느타리 봉지재배 농가의 시범재배 과정에서 ‘갈뫼’와 우리원 육성품종 ‘금향’이 자연교잡된 개체를 조직분리함으로써 육성된 품종으로, 갓 색이 진한 미색을 나타내며, 비닐고깔을 씌우지 않고 재배가 가능하여 노동력이 절감되는 장점이 있다. 16℃ 고온에서 비닐고깔을 씌우지 않고 병재배 시 배양 기간은 24일, 초발이 소요일수는 8일, 생육일수는 11일로 총재배기간이 43일 소요되어 대조품종 ‘금향’에 비해 2일 증가되었다. 갓 색은 진한 미색으로 ‘금향’과 매우 유사했으나, 갓 직경이 더 작고 갓 두께와 대 직경이 더 굵었다. 850 ml(Φ59) 병당 수량은 118 g으로 비닐고깔을 씌운 재배방식에 비해서는 현저히 감소하였으나, 품질이 양호하여 느타리버섯 병재배 농가에 접목 시 노동력 절감 가능성을 보여 주었다.