• 대한의용생체공학회:의공학회지
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• 제6권2호
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• pp.1-8
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• 1985

The wall shear stress in the vicinity of end-to end anastomoses under steady flow conditions was measured using a flush-mounted hot-film anemometer(FMHFA) probe. The experimental measurements were in good agreement with numerical results except in flow with low Reynolds numbers. The wall shear stress increased proximal to the anastomosis in flow from the Penrose tubing (simulating an artery) to the PTFE: graft. In flow from the PTFE graft to the Penrose tubing, low wall shear stress was observed distal to the anastomosis. Abnormal distributions of wall shear stress in the vicinity of the anastomosis, resulting from the compliance mismatch between the graft and the host artery, might be an important factor of ANFH formation and the graft failure. The present study suggests a correlation between regions of the low wall shear stress and the development of anastomotic neointimal fibrous hyperplasia(ANPH) in end-to-end anastomoses. 30523 T00401030523 ^x Air pressure decay(APD) rate and ultrafiltration rate(UFR) tests were performed on new and saline rinsed dialyzers as well as those roused in patients several times. C-DAK 4000 (Cordis Dow) and CF IS-11 (Baxter Travenol) reused dialyzers obtained from the dialysis clinic were used in the present study. The new dialyzers exhibited a relatively flat APD, whereas saline rinsed and reused dialyzers showed considerable amount of decay. C-DAH dialyzers had a larger APD(11.70$\pm$1.32mmHg/min)compared to CF dialyzers(4.32$\pm$0.55mmHg/min)(p<0.05). However, there was no observable difference in the UFR between the two dialyzers. Neither APD nor UFR showed any significant increase with an increasing number of reuses for up to more than 20reuses. A substantial number of failures observed in APD(larger than 20mmHe/min)on the reused dialyzers(2 out of 40 CP and S out 26 C-DAK) were attributed to the Possible damage on the fibers. The CF 15-11 HFDs which failed APD test did not show changes in the UFR compared to normal dialyzers indicating that APD is a more sensitive test than UFR test to evaluate the integrity of the fibers. 30527 T00401030527 ^x For quantitative measurement of reflected light from a clinical diagnostic strip, a prototype old reflectance photometer was designed. The strip loader and cassette were made to obtain more accurate reflectance parameters. The strip was illuminated at 45˚c through optical fiber and the intensity of reflected light was determined at rectanguLat angle using a photodiode. The kubelka-munk coefficient and reflection optical density were determined ar four different wavelengths(500, 550, 570 and 610nm) for blood glucose strip. For higher concentration than 300mg/41 about glucose, a saturation state of abforbance was observed at 500, 550 and 570nm. The correlation between glucose concentration and parameters was the best at 610nm. 30535 T00401030535 ^x Radiation-induced fibrosarcoma tumors were grown on the flanks of C3H mice. The mice were divided into two groups. One group was injected with Photofrin II, intravenously (2.5mg/kg body weight). The other group received no Photofrin II. Mice from both groups were irradialed for approximately 15 minutes at 100, 300, or 500 mW/cm2 with the argon (488nm/514.5 nm), dye(628nm) and gold vapor (pulsed 628 nm) laser light. A photosensitizer behaved as an added absorber. Under our experimental conditions, the presence of Photolfrin II increased surface temperature by at least 40% and the temperature rise due to 300 mW/cm2 irradiation exceeded values for hyperthermia. Light and temperature distributions with depth were estimated by a computer model. The model demonstrated the influence of wavelength on the thermal process and proved to be a valuable tool to investigate internal temperature rise. 30536 T00401030536 ^x We investigated the structural geometry of thirty-eight Korean femurs. The purpose of this study is to identify major geometrical differences between Korean femurs 3nd others that we believe belong to Caucasians so that we would be able to get insights into the femoral component design that fits Asians including Koreans. We utilized computerized tomography (CT) images of femurs extracted from cadavers. The CT images were transformed into bitmap data by using a film scanner, and then analyzed by using a commercially available software called Image v.1.0 and a Macintosh IIci computer.The resulting data were compared with already published data. The major results show that the geometry of the Korean femurs is significantly different from that of Caucasians: (1) the anteversion angle and the canal flare index are greater by the amount of approximately 8˚ and 0.5, respectively, (2) the shape of the isthmus cross section is more round, and (3) the distance between the teaser trochanter and the proximal border of the isthmus is shelter by about 15 mm. The results suggested that the femoral component suitable for Asians should be different from the currently-used components designed and manufactured mostly by European or American companies. 30537 T00401030537 ^x It is well known that nonlinear propagation characteristics of the wave in the tissue may give very useful information for the medical diagnoisis. In this paper, a new method to detect nonlinear propagation characteristics of the internal vibration in the tissue for the low frequency mechanical vibration by using bispectral analysis is proposed. In the method, low frequency vibration of f0( = 100Hz) is applied on the surface of the object, and the waveform of the internal vibration x (t) is measured from Doppler frequency modulation of silmultaneously transmitted probing ultrasonic waves. Then, the bispectra of the signal x (t) at the frequencies (f0, f0) and (f0, 2f0) are calculated to estimate the nonlinear propagation characteristics as their magnitude ratio, w here since bispectrum is free from the gaussian additive noise we can get the value with high S/N. Basic experimental system is constructed by using 3.0 MHz probing ultrasonic waves and the several experiments are carried out for some phantoms. Results show the superiority of the proposed method to the conventional method using power spectrum and also its usefulness for the tissue characterization. 30541 T00401030541 ^x This paper describes the implementation of a computerized radial pulse diagnosis by aids of a clinical expert. On this base, we composed of the radial pulse diagnosis system in korean traditional medicine. The system composed of a radial pulse wave detection system and a radial pulse diagnosis system. With a detection system, we detected Inyoung and Cheongu radial pulse wave and processed it. Then, we have got the characteristic parameters of radial pulse wave and also quantified that according to the method of Inyoung-Cheongu Comparison Radial Pulse Diagnosis. We defined the jugement standard of radial pulse diagnosis system and then we confirmed the possibility for realization of automatic radial pulse diagnosis in korean traditional medicine. 30545 T00401030545 ^x Microspheres are expected to be applied to biomedical areas such as solid-phase immunoassays, drug delivery systems, immunomagnetic cell separation. To synthesize microspheres for biomedical application, "two stage shot growth method" was developed. The uniformity ratio of synthesized microspheres was always smaller than 1.05. And the surface charge density (or the number of ionizable functional groups) of the microspheres synthesized by "two stage shot growth method" was 6~13 times higher than that of the microspheres synthesized by conventional seeded batch copolymerization. As a previous step for biomedical application, adsorption experiments of bovine albumin on microspheres were carried out under various conditions. The maximum adsorbed amount was obtained in the neighborhood of pH 4.5. Isoelectric point of bovine albumin is pH 5.0, so experimental result shows that it shifted to acid area. The adsorption isotherm was obtained, the plateau region was always reached at 2.Og/L (bulk concentration of bovine albumin).The effect of the kind and the amount of surface functional group was also examined. 30575 T00401030575 ^x A medical image workstation was developed using multimedia technique. The system based on PC-486DX was designed to acquire medical images produced by medical imaging instruments and related audio information, that is, doctors' reporting results. Input information was processed and analyzed, then the results were presented in the form of graph and animation. All the informations of the system were hierarchically related with the image as the apex. Processing and analysis algorithms were implemented so that the diagnostic accuracy could be improved. The diagnosed information can be transferred for patient diagnosis through LAN(local area network). 30592 T00401030592 ^x In the conventional infrared imaging system, complex infrared lens systems are usually used for directing collimated narrow infrared beams into the high speed 2-dimensional optic scanner. In this paper, a simple reflective infrared optic system with a 2-dimensional optic scanner is proposed for the realization of medical infrared thermography system. It has been experimentally proven that the intfrared thermography system composed of the proposed optic system has the temperature resolution of 0.1˚c under the spatial resolution of lmrad, the image matrix size of 256 X 240, and tile imaging time of 4 seconds. 30593 T00401030593 ^x In this paper, MIIS (Medical Image Information System) has been designed and implemented using INGRES RDBMS, which is based on a client/server architecture. The implemented system allows users to register and retrieve patient information, medical images and diagnostic reports. It also provides the function to display these information on workstation windows simultaneously by using the designed menu-driven graphic user interface. The medical image compression/decompression techniques are implemented and integrated into the medical image database system for the efficient data storage and the fast access through the network. 30594 T00401030594 ^x In this paper, computerized BEAM was implemented for the space domain analysis of EEG. Trans-formation from temporal summation to two-dimensional mappings is formed by 4 nearest point inter-polaton method. Methods of representation of BEAM are two. One is dot density method which classify brain electrical potential 9 levels by dot density of gray levels and the other is colour method which classify brain electrical 12 levels by red-green colours. In this BEAM, instantaneous change and average energy distribution over any arbitrary time interval of brain electrical activity could be observed and analyzed easily. In the frequency domain, the distribution of energy spectrum of a special band can easily be distinguished normality and abnormality. 30608 T00401030608 ^x Laboratory information system (LIS) is a key tool to manage laboratory data in clinical pathology. Our department has developed an information system for routine hematology using down-sized computer system. We have used an IBM 486 compatible PC with 16MB main memory, 210 MB hard disk drive, 9 RS-232C port and 24 pin dot printer. The operating system and database management system were SCO UNIX and SCO foxbase, respectively. For program development, we used Xbase language provided by SCO foxbase. The C language was used for interface purpose. To make the system use friendly, pull-down menu was used. The system connected to our hospital information system via application program interface (API), so the information related to patient and request details is automatically transmitted to our computer. Our system interfaced with fwd complete blood count analyzers(Sysmex NE-8000 and Coulter STKS) for unidirectional data tansmission from analyzer to computer. The authors suggests that this system based on down-sized computer could provide a progressive approach to total LIS based on local area network, and the implemented system could serve as a model for other hospital's LIS for routine hematology. 30609 T00401030609 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed a composite that is consisted of calcium phosphate and collagen. To use as the structural matrix of the composite, collagen was purified from human umbilical cord. The obtained collagen was treated by pepsin to remove telopeptides, and finally, the immune-free atelocollagen was produced: The cross linked atelocollagen was highly resistant to the collagenase induced collagenolysis. The cross linked collagen demonstrated an improved tensile strength. 30618 T00401030618 ^x This paper is a study on the design of adptive filter for QRS complex detection. We propose a simple adaptive algorithm to increase capability of noise cancelation in QRS complex detection with two stage adaptive filter. At the first stage, background noise is removed and at the next stage, only spectrum of QRS complex components is passed. Two adaptive filters can afford to keep track of the changes of both noise and QRS complex. Each adaptive filter consists of prediction error filter and FIR filter The impulse response of FIR filter uses coefficients of prediction error filter. The detection rates for 105 and 108 of MIT/BIH data base were 99.3% and 97.4% respectively. 30619 T00401030619 ^x To develop an artificial bone substitute that is gradually degraded and replaced by the regenerated natural bone, the authors designed and produced a composite that is consisted of calcium phosphate and collagen. Human umbilical cord origin pepsin treated type I atelocollagen was used as the structural matrix, by which sintered or non-sintered carbonate apatite was encapsulated to form an inorganic-organic composite. With cross linking atelocollagen by UV ray irradiation, the resistance to both compressive and tensile strength was increased. Collagen degradation by the collagenase induced collagenolysis was also decreased. 30620 T00401030620 ^x We have developed a monoleaflet polymer valve as an inexpensive and viable alternative, especially for short-term use in the ventricular assist device or total artificial heart. The frame and leaflet of the polymer valve were made from polyurethane, To evaluate the hemodynamic performance of the polymer valve a comparative study of flow dynamics past a polymer valve and a St. Jude Medical prosthetic valve under physiological pulsatile flow conditions in vitro was made. Comparisons between the valves were made on the transvalvular pressure drop, regurgitation volume and maximum valve opening area. The polymer valve showed smaller regurgitation volume and transvalvular pressure drop compared to the mechanical valve at higher heart rate. The results showed that the functional characteristics of the polymer valve compared favorably with those of the mechanical valve at higher heart rate. 30621 T00401030621 ^x Explosive evaporative removal process of biological tissue by absorption of a CW laser has been simulated by using gelatin and a multimode Nd:YAG laser. Because the point of maximun temperature of laser-irradiated gelatin exists below the surface due to surface cooling, evaporation at the boiling temperature is made explosively from below the surface. The important parameters of this process are the conduction loss to laser power absorption (defined as the conduction-to-laser power parameter, Nk), the convection heat transfer at the surface to conduction loss (defined as Bi), dimensionless extinction coefficient (defined as Br.), and dimensionless irradiation time (defined as Fo). Dependence of Fo on Nk and Bi has been observed by experiment, and the results have been compared with the numerical results obtained by solving a 2-dimensional conduction equation. Fo and explosion depth (from the surface to the point of maximun temperature) are increased when Nk and Bi are increased.To find out the minimum laser power for explosive evaporative removal process, steady state analysis has been also made. The limit of Nk to induce evaporative removal, which is proportional to the inverse of the laser power, has been obtained. 30622 T00401030622 ^x N1 and N2 gross neural action potentials were measured from the round window of the guinea pig cochlea at the onset of the acoustic stimuli. N1-N2 audiograms were made by means of regulating stimulant intensities in order to produce constant N1-N2 potentials as criteria for different input tone pip frequencies. The lowest threshold was measured with an input tone pip I5 dB SPL in intensity and 12 KHz in frequency when the animal was in normal physiological condition. The procedure of experimental measurements is explained in detail. This experimental approach is very useful for the investigation of the Cochlear function. Both noN1inear and active functions of the Cochlea can be monitored by N1-N2 audiograms. 30623 T00401030623 ^x In electrical impedance tomography(EIT), we use boundary current and voltage measurements toprovide the information about the cross-sectional distribution of electrical impedance or resistivity. One of the major problems in EIT has been the inaccessibility of internal voltage or current data in finding the internal impedance values. We propose a new image reconstruction method using internal current density data measured by NMR. We obtained a two-dimensional current density distribution within a phantom by processing the real and imaginary MR images from a 4.77 NMR machine. We implemented a resistivity mage reconstruction algorithm using the finite element method and sensitivity matrix. We presented computer simulation results of the mage reconstruction algorithm and furture direction of the research. 30624 T00401030624 ^x A new method of digital image analysis technique for discrimination of cancer cell was presented in this paper. The object image was the Thyroid eland cells image that was diagnosed as normal and abnormal (two types of abnormal: follicular neoplastic cell, and papillary neoplastic cell), respectively. By using the proposed region segmentation algorithm, the cells were segmented into nucleus. The 16 feature parameters were used to calculate the features of each nucleus. A9 a consequence of using dominant feature parameters method proposed in this paper, discrimination rate of 91.11% was obtained for Thyroid Gland cells. 30625 T00401030625 ^x An electrical stimulator was designed to induce locomotion for paraplegic patients caused by central nervous system injury. Optimal stimulus parameters, which can minimize muscle fatigue and can achieve effective muscle contraction were determined in slow and fast muscles in Sprague-Dawley rats. Stimulus patterns of our stimulator were designed to simulate electromyographic activity monitored during locomotion of normal subjects. Muscle types of the lower extremity were classified according to their mechanical property of contraction, which are slow muscle (msoleus m.) and fast muscle (medial gastrocneminus m., rectus femoris m., vastus lateralis m.). Optimal parameters of electrical stimulation for slow muscles were 20 Hz, 0.2 ms square pulse. For fast muscle, 40 Hz, 0.3 ms square pulse was optimal to produce repeated contraction. Higher stimulus intensity was required when synergistic muscles were stimulated simultaneously than when they were stimulated individually. Electrical stimulation for each muscle was designed to generate bipedal locomotion, so that individual muscles alternate contraction and relaxation to simulate stance and swing phases. Portable electrical stimulator with 16 channels built in microprocessor was constructed and applied to paraplegic patients due to lumbar cord injury. The electrical stimulator restored partially gait function in paraplegic patients. 30626 T00401030626 ^x Two-Dimensional modelling of the Cochlear biomechanics is presented in this paper. The Laplace partial differential equation which represents the fluid mechanics of the Cochlea has been transformed into two-dimensional electrical transmission line. The procedure of this transformation is explained in detail. The comparison between one and two dimensional models is also presented. This electrical modelling of the basilar membrane (BM) is clearly useful for the next approach to the further. Development of active elements which are essential in the producing of the sharp tuning of the BM. This paper shows that two-dimension model is qualitatively better than one-dimensional model both in amplitude and phase responses of the BM displacement. The present model is only for frequency response. However because the model is electrical, the two-dimensional transmission line model can be extended to time response without any difficult. 30627 T00401030627 ^x A method has been proposed for the fully automatic detection of left ventricular endocardial boundary in 2D short axis echocardiogram using geometric model. The procedure has the following three distinct stages. First, the initial center is estimated by the initial center estimation algorithm which is applied to decimated image. Second, the center estimation algorithm is applied to original image and then best-fit elliptic model estimation is processed. Third, best-fit boundary is detected by the cost function which is based on the best-fit elliptic model. The proposed method shows effective result without manual intervention by a human operator. 30628 T00401030628 ^x The intelligent trajectory control method that controls moving direction and average velocity for a prosthetic arm is proposed by pattern recognition and force estimations using EMG signals. Also, we propose the real time trajectory planning method which generates continuous accelleration paths using 3 stage linear filters to minimize the impact to human body induced by arm motions and to reduce the muscle fatigue. We use combination of MLP and fuzzy filter for pattern recognition to estimate the direction of a muscle and Hogan's method for the force estimation. EMG signals are acquired by using a amputation simulator and 2 dimensional joystick motion. The simulation results of proposed prosthetic arm control system using the EMf signals show that the arm is effectively followed the desired trajectory depended on estimated force and direction of muscle movements. 30638 T00401030638 ^x A new neural network architecture for the recognition of patterns from images is proposed, which is partially based on the results of physiological studies. The proposed network is composed of multi-layers and the nerve cells in each layer are connected by spatial filters which approximate receptive fields in optic nerve fields. In the proposed method, patterns recognition for complicated images is carried out using global features as well as local features such as lines and end-points. A new generating method of matched filers representing global features is proposed in this network. 30659 T00401030659 ^x An implementation scheme of the magnetic nerve stimulator using a switching mode power supply is proposed. By using a switching mode power supply rather than a conventional linear power supply for charging high voltage capacitors, the weight and size of the magnetic nerve stimulator can be considerably reduced. Maximum output voltage of the developed magnetic nerve stimulator using the switching mode power supply is 3, 000 volts and switching time is about 100 msec. Experimental results or human nerve stimulations using the developed stimulator are presented. 30768 T00401030768 ^x In this paper, we describe the design methodology and specifications of the developed module-based bedside monitors for patient monitoring. The bedside monitor consists of a main unit and module cases with various parameter modules. The main unit includes a 12.1" TFT color LCD, a main CPU board, and peripherals such as a module controller, Ethernet LAN card, video card, rotate/push button controller, etc. The main unit can connect at maximum three module cases each of which can accommodate up to 7 parameter modules. They include the modules for electrocardiograph, respiration, invasive blood pressure, noninvasive blood pressure, temperature, and SpO2 with Plethysmograph.SpO2 with Plethysmograph.

• 한국산림과학회지
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• 제32권1호
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• pp.36-63
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• 1976

1974년(年) 천연(天然)소나무집단(集團)에 대한 유전적변이(遺傳的變異)를 분석(分析)하고져 먼저 경북(慶北) 청송군(靑松郡) 소재(所在) 주왕산(周王山)소나무림(林), 충남(忠南) 서산군(瑞山郡) 소재(所在) 안면도(安眠島) 소나무림(林), 그리고 강원도(江原道) 평창군(平昌郡) 소재(所在) 소나무림(林)을 대상(對象)으로하여 각(各) 집단(集團)에서 되도록 소면적(小面積)의 범위내(範圍內)에 서있는 소나무 개체(個體)를 각(各) 20주(株)씩 총 60주(株)를 택(擇)하여 그 모수(母樹)에 대한 형태학적(形態學的) 특성(特性)등을 조사측정(調査測定)하고 집단간(集團間)에 보이는 차이(差異) 그리고 한 집단내(集團內)에 있는 각개체수목(各個體樹木)의 형질(形質)을 조사보고(調査報告)한바 있다(제일보고문(第一報論文). 1974년(年) 가을에 가계별(家系別)로 종자(種字)을 채취(採取)하여서 가계별(家系別) 및 산지별(産地別)의 차이(差異)를 분석(分析)하고 동시(同時)에 그 종자(種字)를 파종하여서 1-0묘(苗) 및 1-1묘(苗)를 대상(對象)으로 생장인자(生長因子)에 대한 측정(測定)을 하고 그 유전력(遺傳力)을 계산(計算)해 보았다. 그밖에 엽록소함량(葉綠素含量) 또는 monoterpene등의 함량(含量)의 차이(差異)를 분석(分析)해 보았다. 종자(種字)의 형태학적(形態學的) 특성(特性)에 있어서는 집단간(集團間) 또 가계간(家系間)에 유의차(有意差)를 보이지 않는 것도 있었으나 대체(大體)로 유의차(有意差)가 인정(認定)되었다. 그리고 각형질간(各形質間)의 상관(相關)을 보았는데 구과폭(毬果幅)과 종자익(種字翼)의 폭(幅), 구과장(毬果長)과 종자익(種字翼)의 길이간(間), 그리고 구과(毬果) 생중량(生重量)과 종자중량간(種字重量間)에는 정(正)의 상관(相關)이 보였다. 묘고(苗高)와 근원경(根元徑)의 성장(成長)에 있어서는 가계간(家系間) 그리고 집단간(集團間)에 차이(差異)가 인정되었다. 묘고(苗高)의 유전력(遺傳力)은 집단(集團)의 평균치(平均値)를 가지고 분석(分析)하였다. 즉 집단(集團)에 관계(關係)되는 분산(分散)을 유전분산(遺傳分散)으로 보고서 유전력(遺傳力)을 계산(計算)해 보았는데 1-0묘(苗)의 묘고(苗高)에서는 0.29, 1-1묘(苗)에서는 0.14가 그리고 근원경(根元徑)에 있어서는 1-0묘(苗)는 0.15, 1-1묘(苗)에서는 0.06이였다. 기공열수(氣孔列數)에 있어서는 집단간차이(集團間差異)가 있었으나 거치밀도(鋸齒密度)에는 차이(差異)가 없었다. 침엽(針葉)의 특성(特性)에 관(關)해서는 모수(母樹)와 차대간(次代間)에 상관(相關)이 없었다. 엽록소함량(葉綠素含量)은 집단간차이(集團間差異)는 보였으나 가계간차이(家系間差異)는 없었다. monoterpene의 성분(成分)에 있어서는 myrcene과 ${\beta}$-phellandrene의 함량(含量)으로 집단차(集團差)를 볼 수 있었다.

• 한국작물학회지
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• 제13권
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• pp.1-40
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• 1973

수도 단간품종 육성을 위한 자료를 얻고자 Japonica 단간인 단간백망, Indica 단간인 T(N)1 그리고 Japonica$\times$Indica의 단간고정계통인 IE51의 3개품종을 단간친으로 하고 우리나라 품종인 진흥, 관옥, 및 팔굉을 모본으로 하는 관옥$\times$단간백망, 팔굉$\times$단간백망, 진흥$\times$T(N)1, 관옥$\times$T(N)1 및 관옥$\times$IE51의 5개조합의 $\textrm{F}_2$를 재배시기, 질소시용수준, 재식밀도 및 재배지를 달리한 여러 가지 환경조건하에 공시하여 간장 및 이에 관련된 형질의 유전양상과 생태적 변이를 추구하는 한편 관옥$\times$T(N)1, 진흥$\times$T(N)1 및 관옥$\times$IE51의 3개조합에 대하여는 전 공시개체수의 10%의 단간개체를 선발하여 $\textrm{F}_2$에서의 간장에 대한 선발효과를 검정하였다. 이를 요약하면 다음과 같다. 1. 유전분리 가. Japonica 단간인 단간백망은 관옥 또는 팔굉과 교잡한 $\textrm{F}_2$에서 장간 : 단간이 3:1의 분리비를 나타내었다. 따라서 단간백망의 간장은 단순열성유전인자에 비하여 지배되었음을 알 수 있었다. 나. 상기 두 조합의 $\textrm{F}_2$의 수장분리에 있어서도 장수 : 단수의 분리비는 3:1로 나타났으므로 간장지배인자가 수장 표현에도 크게 관여하는 것으로 판단되었다. 다. 초장의 경우에 있어서도 간장의 분리양상과 대동소이하였다. 라. Indica의 Semi-dwarf인 T(N)1은 진흥 또는 관옥과 교잡한 $\textrm{F}_2$에서 3:1의 단순한 간장분리를 하지 않고 연속적인 정규분포양상을 나타내는 것으로 보아 상대품종들은 T(N)1의 단간인자의 대립유전자를 가지고 있지 않는 것으로 추정된다. 특히 진흥과 교잡한 $\textrm{F}_2$의 간장분리에서는 장간방향으로 초월분리현상을 나타내었다. 수장과 초장의 분리양상은 역시 간장의 경우와 유사하였다. 마. IE51은 관옥과 교잡하였을 때 간장, 수장 및 초장의 $\textrm{F}_2$분리양상이 T(N)1의 그것과 동일하였으므로 IE51의 단간인자는 곧 T(N)1으로부터 도입된 것임을 알 수 있었다. 2. 생태적 변이 가. 일반적으로 재배시기가 늦어짐에 따라 간장 및 초장의 감소를 보였으나 수장의 변이는 비교적 적었으며 그 감소정도는 품종 또는 조합에 따라 다소 달랐다. 그러나 이들 형질의 유전분리양상은 재배시기의 영향을 거의 받지 않음을 알 수 있었다. 나. 제 3절간까지의 절간장은 대체로 간장의 분리양상과 비슷하였다. 따라서 간장의 표현은 제 3절간장까지의 역할이 비교적 중요하다고 생각된다. 다. 질소시용량의 차이가 간장 및 관련형질에 미치는 영향은 비교적 적었다. 물론 질소증시에 따라 이들 형질이 증대되는 경향은 있었으나 품종 또는 그 조합특성에 따라 그 정도가 달랐다. 라. 재식밀도를 달리할 경우 간장 및 관련형질에 미치는 영향은 적은 편 이었으며 품종과 조합에 따라 그 변이정도가 달랐다. 그러나 밀식구에서 이들 형질이 다소 증대되는 경향은 인정할 수 있었다. 마. 교배친품종들의 간장, 수장 및 초장은 저위도지방에서 재배할수록 짧아졌는데 이는 감온성반응때문인 것으로 추측되었으며 $\textrm{F}_2$ 잡종에서는 어느 조합이든 남부인 밀양에서 가장 길었는데 이는 분리된 만생화개체의 고온에 의한 생육조장에 영향한 것으로 추측되었다. 3. 선발효과 가. 간장의 유전력은 관옥$\times$T(N)1에서 92%, 진흥$\times$T(N)1에서 55% 그리고 관옥$\times$IE51에서 74%로서 조합에 따라 다르나 상당히 높은 편이었다. 나. $\textrm{F}_2$전공시개체중에서 단간쪽의 10% 개체를 선발하여 G$_3$시험에서 얻은 실제적인 간장단축량은 관옥$\times$T(N)1조합에서 20.8cm, 관옥$\times$IE51조합에서 8.7cm 그리고 진흥$\times$T(N)1조합에서 20.0cm로서 기대치에 비교적 가까운 선발효과를 얻을 수 있었다. 다. 간장의 선발이 수장에 미치는 영향은 조합에 따라 상이하였으나 관옥$\times$T(N)1조합에서는 $\textrm{F}_2$모집단에 비하여 수장의 단축을 거의 인정할 수 없었다. 이상의 결과로 보아 간장, 수장 및 초장의 생태적 변이는 비교적적은 편으로 유전적 분리 범위내에 국한되었으며 단간백망의 간장 표현에 관여하는 단순열성인자는 단수 및 소립등의 불량형질을 동반하므로서 실용가치가 없는 반면에 T(N)1의 단간인자는 이러한 불량형질과 연쇄되지 않는 장점을 가졌으므로 단간모본으로서의 활용도가 높은 것으로 인정되었다.

• 한국산림과학회지
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• 제22권1호
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• pp.19-48
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• 1974

토지국유원칙(土地國有原則)을 표방(標榜)하고 "공사(公私) 공리(共利)"를 기본원칙(基本原則)으로 하고 있었던 고려조(高麗朝)의 시전과제도(柴田科制度)도 집권력(執權力)의 약화(弱化)로 인(因)하여 조만간(早晩間), 붕괴(崩壞)되고 말았던 것이나 임지제도(林地制度)에 있어서는 분묘설정(墳墓設定)의 자유(自由)와 개간장려(開墾奬勵)를 이용(利用)한 삼림(森林)의 광점(廣占) 및 전시과제도(田柴科制度)로 인(因)한 시지(柴地)의 수조권위양(收租權委讓)으로 유래(由來)된 사적수조권(私的洙組權)이 결부(結付)된 삼림(森林)의 사점현상등(私占現象等)이 점차(漸次) 발전(發展)하여 고려중기(高麗中期)의 국정해지기이후(國政解地期以後)에는 대부분(大部分)의 삼림(森林)이 권력층(權力層)의 사점지(私占地)로 화(化)하여 왔었다. 고려조(高麗朝)의 모든 제도(制度)를 그대로 계승(繼承)한 이조(李朝)는 건국후(建國後) 국가소용(國家所用)의 삼림확보(森林確保)를 위(爲)한 삼림수용(森林收用)의 제도확립(制度確立)이 긴요(緊要)하였음으로 전국(全國)의 삼림(森林)을 국가권력(國家權力)에 의(依)하여 공수(公收)하고 국가(國家)와 궁실소용이외(宮室所用以外)의 모든 삼림(森林)은 사점(私占)을 금(禁)한다는 "시장사점금지(柴場私占禁止)"의 제도(制度)를 법제화(法制化)하였고 도성주변(都城周邊)의 사산(四山)을 금산(禁山)으로 함과 아울러 우량(優良)한 임상(林相)의 천연림(天然林)을 택(擇)하여 전조선용재(戰漕船用材)와 궁실용재(宮室用材)의 확보(確保)를 위(爲)한 외방금산(外方禁山)으로 정(定)하고 그 금양(禁養)을 위(爲)하여 산직(山直)을 배치(配置)하였다. 그리고 연병(練兵)과 국왕(國王)의 수렵(狩獵)을 위(爲)한 강무장(講武場)과 관용시장(官用柴場), 능원부속림(陵園附屬林)의 금벌(禁伐), 금화(禁火)를 제정(制定) 등(等) 필요(必要)에 따라 수시(隨時)로 삼림(森林)을 수용(收用)하였으나 고려조이래(高麗朝以來)로 권력층(權力層)에 의(依)하여 사점(私占)되어온 삼림(森林)을 왕권(王權)으로 모두 공수(公收)하지는 못하였던 것이다. 이조초기(李朝初期)에 있어서의 집권층(執權層)은 그 대부분(大部分)이 고려조(高麗朝)에서의 권력층(權力層)이었던것 임으로 그들은 이미 전조시대(前朝時代)로부터 많은 사점림(私占林)을 보유(保有)하고 있었던 것이고 따라서 그들이 권력(權力)을 장악(掌握)하고 있는 한(限) 사점림(私占林)을 공수(公收)한다는 것은 어려운 일이었으며 그들은 오히려 권력(權力)을 이용(利用)하여 사점림(私占林)을 확대(擴大)하고 있었던 것이다. 또 왕자(王子)들도 묘지(墓地)를 빙자(憑藉)하여 주(主)로 도성주변(都城周邊)의 삼림(森林)을 광점(廣占)하고 있던 터에 성종(成宗)의 대(代) 이후(以後)로는 왕자신(王自身)이 금령(禁令)을 어기면서 왕자(王子)에게 삼림(森林)을 사급(賜給)하였음으로 16세기말(世紀末)에는 원도지방(遠道地方)에 까지 왕자(王子)들의 삼림사점(森林私占)이 확대(擴大)되었고 이에 편승(便乘)한 권신(權臣)들의 삼림사점(森林私占)도 전국(全國)으로 파급(波及)하였다. 임진왜란후(壬辰倭亂後)에 시작(始作)된 왕자(王子)에 대(對)한 시장절급(柴場折給)은 삼림(森林)의 상속(相續)과 매매(賣買)를 합법화(合法化)시켰고 이로 인(因)하여 봉건제하(封建制下)에서의 사유림(私有林)을 발생(發生)시키게 된 것이다. 그리하여 권신(權臣)들도 합법적(合法的)으로 삼림(森林)을 사점(私占)하게 되었고 따라서 이조시대(李朝時代) 임지제도(林地制度)의 기본(基本)이었던 시장사점금지(柴場私占禁止)의 제도(制度)는 건국초(建國初)로부터 실행(實行)된 일이 없었으며 오로지 국가(國家)의 삼림수용(森林收用)을 합법화(合法化)시키는 의제(擬制)에 불과(不過)하였던 것이다. 금산(禁山)은 그 이용(利用)과 관리제도(管理制度)의 불비(不備)로 인(因)하여 산하주민(山下住民)들의 염오(厭惡)의 대상(對象)이 되었음으로 주민(住民)들의 고의적(故意的)인 금산(禁山)의 파괴(破壞)는 처음부터 심(甚)하였고 이로 인(因)하여 국가(國家)에서는 용재림확보(用材林確保)를 위(爲)한 금산(禁山)의 증설(增設)을 거듭하였으나 관리제도(管理制度)의 개선(改善)이 수반(隨伴)되지 않았음으로 금산(禁山)의 황폐(荒廢)는 더욱 증대(增大)되었다. 영조(英祖)는 정국(政局)을 안정(安定)시키기 위(爲)하여 경국대전이후(經國大典以後) 남발(濫發)된 교령(敎令)과 법령(法令)을 정비(整備)하여 속대전(續大典)을 편찬(編纂)하고 삼림법령(森林法令)을 정비(整備)하여 도성주변(都城周邊)의 금산(禁山)과 각도(各道) 금산(禁山)의 명칭대신(名稱代身) 서기(西紀) 1699년(年) 이후(以後) 개칭(改稱)하여온 봉산(封山)의 금양(禁養)을 강화(强化)시키는 한편 사양산(私養山)의 권한(權限)을 인정(認定)하는 등(等) 적극적(積極的)인 육림정책(育林政策)을 퍼려하였으나 계속적(繼續的)인 권력층(權力層)의 삼림사점광대(森林私占廣大)는 농민(農民)들로부터 삼림(森林)을 탈취(奪取)하였고 농민(農民)들 이 삼림(森林)을 상실(喪失)함으로써 국가(國家)의 육림장려등(育林奬勵策)은 효과(効果)를 나타내지 못하였던 것이다. 임진왜란후(壬辰倭亂後)의 국정해이(國定解弛)로 인(因)한 묘지광점(墓地廣占), 왕자(王子)에 대(對)한 삼림(森林)의 절급(折給) 권세층(權勢層)에 대(對)한 산림사점(森林私占)은 인허(認許)하는 입안문서(立案文書)의 발행등(發行等)으로 법전상(法典上)의 삼임사점금지조항(森林私占禁止條項)은 사문화(死文化)되었고 이조말기(李朝末期)에 있어서는 사양산(私養山)의 강탈(强奪)도 빈발(頻發)하고 있음을 볼수 있다. 이와 같이 이조시대(李朝時代)의 시장사점금지조항(柴場私占禁止條項)은 오로지 농민(農民)에게만 적용(適用)되는 규정(規定)에 불과(不過)하였고 이로 인(因)하여 농민(農民)들의 육림의욕(育林意慾)은 상실(喪失)되었으며 약탈적(掠奪的)인 삼림(森林)의 채취이용(採取利用)은은 금산(禁山), 봉산(封山) 및 사양산(私養山)을 막론(莫論)하고 황폐(荒廢)시키는 결과(結果)를 자아냈으며 권력층(權力層)의 삼림점탈(森林占奪)에 대항(對抗)한 송계(松契)의 활동(活動)으로 일부(一部) 공산(公山)이 농민(農民)의 입회지(入會地)로서 보존(保存)되어왔다. 그럼에도 불구(不拘)하고 일제(日帝)는 이조말기(李朝末期)의 삼림(森林) 거의 무주공산(無主公山)이 었던것처럼, 이미 사문화(死文化)된 삼림사점금지조항(森林私占禁止條項)을 활용(活用)함으로써, 국가림(國有林)으로 수탈(收奪)한후(後) 식민정책(植民政策)에 이용(利用)하였던 것이나, 실제(實際)에 있어서 이조시대(李朝時代)의 삼림(森林)은 금산(禁山), 봉산(封山), 능원부속림등(陸園附屬林等)의 관금지(官禁地)와 오지름(奧地林)을 제외(除外)하고는 대부분(大部分)의 임지(林地)가 권세층(權勢層)의 사유(私有) 내지(乃至)는 사점하(私占下)에 있었던 것이다.