• Journal of the Korean Institute of Telematics and Electronics C
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• v.35C no.8
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• pp.10-22
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• 1998

To handle the density increase of SRAMs, a new parallel testing methodology based on built-in self test (BIST) is developed, which allows to access multiple cells simultaneously. The main idea is that a march algorithm is dperformed concurently in each baisc marching block hwich makes up whole memory cell array. The new parallel access method is very efficient in speed and reuqires a very thny hardware overhead for BIST circuitry. Results show that the fault coverage of the applied march algorithm can be achieved with a lower complexity order. This new paralle testing algorithm tests an .root.n *.root.n SRAM which consists of .root.k * .root.k basic marching blocks in O(5*.root.k*(.root.k+.root.k)) test sequence.

• The Korean Journal of Mycology
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• v.8 no.1
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• pp.53-57
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• 1980

An undescribed black root rot of soybean, caused by Cylindrocladium crotalariae, was observed in Suweon area. The diseased plants showed yellowing at the top and dry rot at the root. Lesions of roots and stems in the soil were red to brown and main roots were cracked. Although not observed the disease in the field, leaves of inoculated test plants in the greenhouse exhibited circular, brown lesion surrounded by chloratic halos. The fungus was recovered in culture from the infected stem and root, and the perithecia of Calonectria crotalariae were demonstrated to be present as well as the cylindrocladium state. The fungus was pathogenic to the root, stem, petioles and leaves of soybean. The probable source of primary inoculum was microsclerotia formed in infected soybean root and stem from the previous season's soybean debris. Black root rot by this fungus was considered to be one of detrimental factors to the maximum yield of soybean. From the morphological and physiological characteristics and pathogenic behaviors, this fungus was identified as Cylindrocladium(Calonectria) crotalariae.

• Research in Plant Disease
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• v.14 no.1
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• pp.76-78
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• 2008

During the investigation of Allium decline in Pohang, Korea, root-knot nematode was found from root of Allium tuberosum Roth. It was identified as Meloidogyne incognita and was first reported from Allium tuberosum. Allium decline was associated with root-knot nematode, root mite and Fusarium sp. but root-knot nematode appeared to be the main cause of Allium decline.

• Journal of Forest and Environmental Science
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• v.26 no.3
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• pp.193-202
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• 2010

To analyze the effects of tree roots on the stability of damage slope, distributional and physical properties of five-year Pinus densiflora roots were investigated. In the composition of roots, the proportion of main root to lateral root was 1 to 9 in slope condition. Root tensile force was increased in accordance with increased proportion to diameter of Pinus densiflora roots. However, tensile strength was decreased in proportion to diameter of roots. Root shear strength showed that soil containing Pinus densiflora roots was higher than that of non-treated soils. This result shows that Pinus densiflora roots significantly stabilize the surface-soil rather than sub-soil in damage slopes.

• Korean Journal of Plant Resources
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• v.21 no.5
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• pp.402-407
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• 2008

Total phenol content was obtained from the stem extract of 7.8 (g/100g, D.W.) and root extract of 10.5 (g/100g, D.W.) on Rosa rugosa. S-4 and R-2 compounds were isolated from the stem and root of R. rugosa. The structure of S-4 and R-2 compounds was assigned as catechin by $^{1}H,\;^{13}C$ CNMR signal and TOF-MS. The tannin content of stem extract was 752.5 (mg/100g, D.W.) as 6.3 of gallic acid, 61.5 of epicatechin and 684.8 of catechin. The tannin content of root extract was higher about 2 times (1676.0) as 6.8 of gallic acid, 160.3 of epicatechin and 1508.5 of catechin than that of stem. It was shown that catechin was main compound in the stem and root extracts of R. rugosa. Antioxidant activities were stronger low concentration, and were not different of stem and root extracts. As the results, stem and root of R. rugosa were evaluated, as natural antioxidant resource.

• The Korea Journal of Herbology
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• v.23 no.3
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• pp.135-140
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• 2008

Objectives : The purpose of this study is to clarify the medicinal using part of Linderae Radix. Methods : Find out the using part of Linderae Radix in the Pharmacopoeia, main Herbal book and present day scientific research result. Results : 1. In the Phamacopoeia of 6 Nation, The herbal name of Lindera strychnifolia is Linderae Radix, the origin is root, shapes of Linderae Radix are recorded spindle-shaped, slightly curved, some constricted in the middle to be moniliform on every Pharmacopoeia. But only in the Pharmacopoeoa of the people's republic of china, root is recorded as root tuber. 2. The Straight root of Linderae Radix can not be used as medicine on the Pharmacopoeia of the China, Vietnamese, Chinese Taipei. 3. In Gaebo Boncho(開寶本草) and Bonchodogyeong(本草圖經), Dongeuibogam(東醫寶鑑), Bonchogangmok(本草綱目), ickmulmyeongsildogo(植物名實圖考), only the spindle-shaped root of Linderae Radix can be used as medicine. 5. The picture of the root is also spindle-shaped. Conclusions : The herbal name of Lindera strychnifolia is Linderae Radix, medicinal using part is root tuber, spindle-shaped, some constricted in the middle to be moniliform, straight and not spindle-shaped tap roots can not be used medicinally, and allowing guide line of straight root will upgrade the quality of Linderae Radix.

• KIEAE Journal
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• v.8 no.2
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• pp.59-64
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• 2008

This research was performed to activate various new technology for indoor container, and attempt to a desirable planting environment of indoor plant by verify effect that indoor container slit ventilation system gets in growth and root activation of Korea Native Plants. Main result is as following. 1. Davallia mariesii, typical epiphyte fern, was appeared that growth of top and root activation was helped by slit ventilation system in indoor container and were very positive in rhizome development specially. 2. Hedera rhombea was helped growth of top by slit ventilation system, and specially, effect of plant height and number of shoot. Also, this slit system was positive in root activation. So, this indoor container appeared by thing which is very desirable in climbing plants as well as epiphyte plants. According to result that see effect getting in growth and root activation of Davallia mariesii and Hedera rhombea for indoor container slit ventilation system, Growth of top was different in plant but root activation was developed.

• YAKHAK HOEJI
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• v.12 no.3_4
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• pp.50-58
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• 1968

The root of Angelica koreana $M_{AXIMOWICZ}$ (Umbelliferae) known as "Kang-whal" in Korea used for the treatment of common cold, headache and gout etc. The comparative anatomy of Angelica Koreana $M_{AXIMOWICZ}$ and A. purpuraefolia $C_{HUNG}$ was presented. A great part of the report was dealed with the differences in the comparative histology of root, stem, main vein in leaf and fruits.

• Korean Journal of Medicinal Crop Science
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• v.5 no.3
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• pp.202-205
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• 1997

This study was carried out to determine the effect of sowing time on the flowering, growth and yield of Scutellaria baicalensis Georg, which was collected from Yeochon district, cultivated after barley in the southern coastal areas of Korea. Emergence and flowering dates in the sowing time of June 1 were earlier than those of the other sowing times. In the sowing time of June 1, length and diameter of main stem, number of node per main stem, number of branch per plant and dry weight of stem leaves were greater than those of sowing times of June 10 and June 20. Yield components such as main stem length and diameter, main stem numbers, branches per plant, dry weight of stem leaves, main root length and thickness, number of large root and fine root per plant, and dry weight of root were the highest at the sowing time of June I as the yield of 71.3kg/10a. Optimum sowing time of Scutellaria baicalensis Georg cultivated after barley was June 1 in southern areas of korea.

• Korean Journal of Pharmacognosy
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• v.41 no.3
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• pp.185-189
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• 2010

In this study, we analyzed and quantified the amounts of bioactive phenolic constituents, xanthotoxin (1), oxypeucedanin (2), and imperatorin (3) in each part of the root of Angelica dahurica by HPLC, which validated by ICH guide lines comparing the linearity, intra day precision, inter-day precision. As a result, the amount of imperatorin 2.96% in the rootlet was two fold higher than that of the main root 1.32%. On the other hand, the amounts of xanthotoxin and oxypeucedanin in the rootlet showed similar to those of main root. In addition, the cortex of root is more plentiful of three consitituents (0.66%, 0.53%, and 1.85%) than those of xylem (0.29%, 0.05%, and 0.07%). These results show that the rootlet and cortex contain a large amount of bioactive phenolic constituent including xanthotoxin, oxypeucedanin, and imperatorin than other parts of the root.