A5061785371- Forest ecology and management
- Remote Sensing and LiDAR Applications
- Helicobacter pylori-related gastroenterology studies
- Gastric Cancer Management and Outcomes
- Forest Management and Policy
- Bamboo properties and applications
- Tree Root and Stability Studies
- Gastrointestinal disorders and treatments
- Remote Sensing in Agriculture
- Veterinary medicine and infectious diseases
- Forest Biomass Utilization and Management
- Plant Water Relations and Carbon Dynamics
- Esophageal and GI Pathology
- Galectins and Cancer Biology
- Gallbladder and Bile Duct Disorders
- Forest Ecology and Biodiversity Studies
- Gastrointestinal Tumor Research and Treatment
- Gastrointestinal Bleeding Diagnosis and Treatment
- Leaf Properties and Growth Measurement
- Diet, Metabolism, and Disease
- Ecology and Conservation Studies
- Soil Geostatistics and Mapping
- Gastroesophageal reflux and treatments
- Genetic factors in colorectal cancer
- Monoclonal and Polyclonal Antibodies Research
Forestry and Forest Products Research Institute
2014-2025
Forest Research
2019-2021
Shikoku (Japan)
2015
Kyushu University
2008-2010
University of Yamanashi
1998-2010
Olive View-UCLA Medical Center
2005
Cedars-Sinai Medical Center
2005
UCLA Medical Center
2005
Harbor–UCLA Medical Center
2005
University of California, Los Angeles
2005
The biodiversity-productivity relationship (BPR) is foundational to our understanding of the global extinction crisis and its impacts on ecosystem functioning. Understanding BPR critical for accurate valuation effective conservation biodiversity. Using ground-sourced data from 777,126 permanent plots, spanning 44 countries most terrestrial biomes, we reveal a globally consistent positive concave-down BPR, showing that continued biodiversity loss would result in an accelerating decline forest...
The characteristics of pepsinogen screening for gastric cancer were investigated to establish a suitable cut off point identifying cancer, using endoscopic diagnosis as the yardstick.Serum concentrations measured in 5113 subjects who also screened by endoscopy. was determined receiver operator curves.The most I concentration less than 70 ng/ml and ratio II 3. 0. Using this point, sensitivity specificity 84.6% 73.5% respectively. All cases patients with severe atrophic gastritis detected....
Abstract c‐ erb ‐2 amplification and overexpression are currently attracting a great deal of attention because new adjuvant therapy using an antibody against the B‐2 gene product, trastuzumab (Herceptin; Genentech, Inc., South San Francisco, CA), has proved effective in treating breast cancer with and/or B‐2. Aberrations have also been detected ovarian, endometrial gastric carcinomas at varied frequencies. Amplification locus (17q12‐q21.32), protein (p185) serum levels soluble fragments...
The purpose of this study was to evaluate the level gallbladder cancer risk associated with polyps and stones by ultrasound examinations.We investigated abdominal ultrasonographic findings for gallstones relationship these malignancy in 194,767 asymptomatic participants health screening examinations.Gallstones were detected 7,985 (4.1%), at a prevalence 5.3% male 4.5% female participants. highest participants' seventh decade, followed sixth fifth decades, both Polyps found 10,926 (5.6%),...
The accurate estimation of tree attributes is essential for sustainable forest management. Terrestrial Laser Scanning (TLS) a viable remote sensing technology suitable estimating under canopy structure. However, TLS measurements generally underestimate height in taller trees, which leads to the underestimation other (e.g., stem volume). integration information derived from and Unmanned Aerial Vehicle (UAV) photogrammetry could potentially improve estimation. This study investigated...
<ja:p>Due to the large number of sample plots and variables be measured, inexperienced surveyors are expected take field measurements in National Forest Inventories (NFIs). However, very little information exists on data quality that can from given different levels training. We evaluated produced by undergraduate students when measuring most fundamental variables: tree diameter using a tape height an ultrasonic Vertex III hypsometer. found single training session how use instruments reduce...
In this study, we analyzed Japanese National Forest Inventory data to investigate the geographical variation in relationship between tree height and age for dominant trees, effects of climatic conditions on these relationships. Our analysis focused Cryptomeria japonica forests 13 regions Japan. The age–height relationships were classified into two regional groups that distinguished by their conditions. Several categories variables (warmth, solar radiation, precipitation, snow depth)...
The main objective of this study was to evaluate the effectiveness adding feature variables, such as forest type information and topographic- climatic-environmental factors satellite image data, on accuracy stand volume estimates made with k-nearest neighbor (k-NN) technique in southwestern Japan. Data from Forest Resources Monitoring Survey—a national plot sampling survey Japan—was used situ data study. obtained three Landsat Enhanced Thematic Mapper Plus (ETM+) datasets acquired different...
The k-nearest neighbors (kNN) method is widely employed in national forest inventory applications using remote sensing data. objective of this study was to evaluate the kNN for stand volume estimation by combining LANDSAT/ETM+ data with 622 field sample plots from Japanese National Forest Inventory (NFI) Kyushu, Japan. root mean square error (RMSE) and relative RMSE estimates rapidly decreased as number nearest (k) increased up five, then it slightly declined. They were consistently smaller...
The aim of this study was to assess the factors that account for geographical variation in soil organic carbon stocks at 0–30‐cm depth ( SOC 30 ) forests J apan. Boosted regression tree analysis applied 2157 points throughout apan and four regional subdivisions with 16 environmental variables. rank predictor variables different as a whole among regions. For whole, group, air temperature, slope inclination, altitude litter were most important affected stocks. Overall, decreased which...
We derive a two-way volume equation for estimating the apparent culm of one largest bamboo species, Phyllostachys pubescens Mazel ex Houz. The was derived from assumptions that (1) relative form can be expressed by Kunze's and (2) normal form-factors at two different heights are steady constants independent sizes. A total number 200 sample culms were collected stand P. in Mt. Toshima, Kumamoto Prefecture, western Japan, randomly bisected into sets data, i.e. modeling test data. For 0.6 0.9...
In most countries, the positional accuracy of National Forest Inventory (NFI) plots is unknown, even though NFI expected to provide geo-referenced ground data for remote sensing. The present study evaluated error Japanese that had already been located using a Global Positioning System (GPS) navigational assistance toward target coordinates on 4-km grid. actual positions 82 in 4 prefectures were measured high-precision GPS with dual-frequency carrier-phase observation comparison coordinates....
We investigated the latitudinal variation in radial growth phenology (onset, cessation, and duration of growth) Cryptomeria japonica D. Don trees Japan. The was observed using dendrometers 16 stands at multiple latitudes throughout onset showed a clear gradient: high-latitude sites, C. started later than low-latitude sites. However, cessation independent latitude. Consequently, (defined based on dates) weak but significant grew for shorter period were respectively strongly weakly affected by...
Understanding the tree growth process is essential for sustainable forest management. Future yields are affected by various management regimes such as thinning; therefore, accurate predictions of needed under thinning intensities. This study compared accuracy individual-level distance-independent diameter models constructed different intensities (thinning intensity-dependent multiple models: TDM model) against model designed to include all intensity-independent single model: TIS understand...
Yield prediction has been determined to be vital in sustainable forest management. Recently, research trends have shifted from stand-level individual-level yield prediction. In this study, we examined the effectiveness of models based on a distance-independent approach for Japanese cedar (Cryptomeria japonica (L.f.) D.Don) trees western Japan. We further accuracy with reference existing data collected over long-term. First, constructed height, diameter growth, and survival models. Then,...
The objective of this study was to examine the effectiveness using Japanese National Forest Inventory (NFI) data in modeling site productivity. We investigated relationship between index sugi (Cryptomeria japonica) planted forests derived from NFI and climatic topographic factors. area main island Kyushu located south-west part Japan. estimated with guide curve method set dominant tree height stand age stands data. Solar radiation index, hydrological upslope contributing area, vertical...