Digital Library

Search Result(s): 38477

Risk Assessment Method of Heavy Metal Pollution in Agricultural Soil

Shihong Huang, Xianhao Long, Guangxian Luo, Lei Wang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.019

On the State Governance under the Rule of Law Framework of ‘Guan Zi • Political Establishment’

Panxin Wang, Nan LIU, Xinrui Dai, Qianlong Dong, Xipeng Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.020

Study on the Migration and Transformation Law of Arsenic in Groundwater, Soil and Other Multi-Media

Jun HOU

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.021

Application of CAD in Modern Reconstruction of Chinese Traditional Lacquer Art

Guichao Wang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.022

The Use of Chinese National Musical Instruments in Western Orchestras

Wei LUO

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.023

Research on the Application of Guitar in Band Accompaniment

Jiahui Wen

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.024

Importance, Countermeasures and Suggestions of Autumn Afforestation in Semi-arid Area of the Loess Plateau

Huaizhou Zhang, Yanyan Zhou

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.025

Harmonious and Tear: An Imagological Investigation of the “Hybrid” in Mo Yan's Novels

Chenxin Zheng

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.026

Linear and logical analysis of film narrative structure under digital media

Shu DONG

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.027

An Analysis of Vocal Music Performance Art and Its Aesthetic Features from the Perspective of Reception Aesthetics

Tian QIU

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.028

To what extent did Michelangelo imitate nature in his sculptures

Yang shuting

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.029

Analysis of Artistic Design Features of Chinese Folk Patterns Based on Immersive Communication

Yawei Yu, Jie XIANG

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.030

Thinking-based Graphic Design and Localization and Reconstruction of Its Design Elements

Hanwen Zhang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.031

Research on Spatial Sense in Poster Design Based on Logical Paradox

Mengge Huo, Manjie Yang, Yibo Zhang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.032

A survey on the ritual of the Gepo Yi people

Hui Ping, Jingjing Ma

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.033

Study on the Application of Woodcarving Art in Interior Design by New Students

Lu Wang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.034

Aesthetic Tradition and Cultural Temperament of British and American Literature

WenYi Pan

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.035

The innovative application and research of folk cloth tiger in children's clothing

Jiayu Cao, Xiaodan Li

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.036

Research on financial performance of Aiko solar backdoor listing

Mengru Yao

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.037

Analysis on the profit quality of D film and television company

Lingyan Zhang

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.038

Analysis of Urban Environmental Art Design Techniques Based on Practical Aestheticism

Chang LIU

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.039

Cultivation of aesthetic feeling in juvenile gymnastics teaching and training under the background of new curriculum standard

Li YANG

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.040

The Ideological Core and Basic Psychoanalysis of Tibetan Traditional Culture

SUO Lang Sang Ge

Abstract | References | PDF | HTML | Pub. Date: Apr 11, 2021

DOI: 10.25236/soshu.2021.041

The Realistic Dilemma and Construction Exploration of Youth Social Organizations Participating in Social Governance

Dazhi Xu, Xiaoyong Xiao*

Abstract | References | PDF | HTML | Pub. Date: Apr 10, 2021

DOI: 10.25236/AJHSS.2021.040315

On the Sustainable Development of College Students' Volunteer Service in the New Era

Tao Feng

Abstract | References | PDF | HTML | Pub. Date: Apr 10, 2021

DOI: 10.25236/FER.2021.040313

The Transformation of Government Governance Model from the Perspective of Big Data

Dazhi Xu, Xiaoyong Xiao*

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/AJBM.2021.030401

The Logical Construction of the Performance Evaluation System of State-owned Assets Management in Colleges and Universities

Huijie Wang¹, Qiong Jiang^2,*

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/AJBM.2021.030402

The Integrated Development of Digital Economy and China's Textile Manufacturing Industry: Based on the Experience of Shaoxing, Zhejiang Province

Chen Yuxin, Qian Fangbin, Shang Yunfeng

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/AJBM.2021.030403

Analysis of Pfizer Inc. under COVID-19

Zhang, Aaron Zhexuan

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/AJBM.2021.030404

A Study on the Relationship between UGT2B7 Gene Polymorphism and Clinical Prognosis

Yang Xiao, Mengcong Ma, Yichen Li

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/FMSR.2021.030205

Efficacy of Tokuhashi Score in Predicting the Prognosis among Chinese Patients with Spinal Metastasis

Chia-Jui Chen

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.001

Study on the Relationship between the Fingerprint Characteristics of Shatian Pomelo and Its Pharmacodynamics

Shan Cong, Ying Mao, Chunxue Yu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.002

A New Mechanism for Foxm1 to Enhance the Malignant Phenotype of Lung Cancer Cells: Increasing Egfr Transcription and Activating Egfr Signaling Pathway

Chia-Jui Chen

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.003

A Novel Therapeutic Mechanism for Bacterial Vaginitis Based on Gentian Liver-Draining Decoction and Its Modified Prescription Combined with Sophora Flavescens Gel

Haonan Zhu, Weiqi Chen, Xijian Guo, Ningxin Liang, Xinyi Ma, Peizheng Yan, Dong Yu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.016

The Correlation between Conventional Two-Dimensional Ultrasound Combined with Elastography and Histopathological Grading of Ductal Carcinoma in Situ

YiJing Deng, XiaoHong Xu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.005

Joint Prevention and Control of New Coronavirus Infection in Chengdu Chongqing Urban Agglomeration

Menghan Huang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.006

Clinical Efficacy of Immunotherapy with Pd-1/Pd-L1 Inhibitors for the Treatment of Advanced Non-Small Cell Lung Cancer

Shengjie Yang, Xiao MA, Wenjie Zhang, Qing CHEN, Qisen Guo

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.007

Effect of Finger Pressing on Anti-Inflammatory Effect in Obese Rats with Insulin Resistance

Shaotao Chen, Lin JIANG, Xiaolin Zhang, Mingjun Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.009

Construction of Rehabilitation System of Freestyle Skiing Aerials Sports Injury

Ningning Zhao, Jian ZHANG

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.010

To observe the effect of rapid rehabilitation nursing on the perioperative nursing management of patients with laparoscopic ovarian cyst exfoliation

Qian SUN

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.011

BCG Polysaccharide Nucleic Acid Interferes with the Mechanism of PHN Mediated by Inflammatory Factors

Di WU, XingNan Li, Xiufe Wang, Hao XU, Yuehua Ma, Shukun Lv, Liran Cui

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.012

Hot compress dredges the meridians and collaterals and avoids adhesive contact with the skin

Xiaodan Li, Jiayu Cao

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.013

The Relationship between Emotion Regulation Methods and Post-traumatic Stress

Sicheng Chen

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.014

Research on rapid qualitative detection of titanium in pyrotechnics

Junyi Wu, Yunlian Zhang, Lanhua You

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.001

The Key Technical Research of Supply Chain Finance Platform Based on the Blockchain Technology

Qiang Li, Xinqiang Ma

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.002

A Multi Energy Complementary Energy Collection Device for Railway

Youlong Hua, Jiahui Cui

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.003

The Application of Bionic Design on Daily Ceramic Design

Zeping Huang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.004

Research on the Application of Hybrid Power Technology in Vehicle Engineering

Luhua Chen

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.005

Solar Air-Conditioning Refrigeration Technology and Its Research Progress

Zheng Fuzhen, Lv Jun, Li Xiaodong, Fu Ying

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.006

Method of Post-Tensioned Box Girder Precast Construction Craft and the Tensioning Process Control Research

Junping Bian

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.007

Fast Synthesis of the Iridium (Iii) Complexes At Room Temperature for High-Performance Oleds

Zhiwei Zhang, Youxuan Zheng

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.008

The structure design and performance analysis of a racing welded steering knuckle

Jing Chen, Xinyi Shen, Zhicheng Zeng

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.009

Research Status of Element Distribution in Titanium Slag Smelting

Shihong Huang, Xianhao Long, Guangxian Luo, Lei Wang, Ting Lei

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.010

Points of Subgrade and Pavement Construction Technology in Highway Engineering Construction

Zhiyi Li

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.011

Faulting Forecast of Concrete Pavement Considering Erosion and Void

Jingjing Li, Zhanfeng Wang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.012

Analysis of Water Damage Test of Superflex Modified Asphalt and Asphalt Mix

Qiuyun Wang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.013

Analysis on Water Conservancy Project Construction Technology and Management

Qin LU

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.014

Application Analysis of Bim Technology in the Architectural Design Stage

Lei YUAN, Xi YANG

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.015

Research on Water Conservancy Project Based on Environmental Protection Concept

Jinlong Kang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.019

Application of Nano-ceramic Materials in Lingnan Characteristic Interior Decoration Design

Jin LING

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.020

Analysis of Construction Technology in Concrete and Steel Structure Engineering

Yuzhen Guo

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.021

Research on the Connection between Architectural Murals and Architectural Environment Based on Public Cultural Service Function

Jia HAO

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.022

Research and Analysis on the Relationship between Geometric Parameters and Cutting Force of Mechanical Milling Tool

Dongya Li, Ming Wei

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.023

How to Better Apply New Building Materials in Structural Design of Building Engineering

Shui Liu, Shu Tang, Yawen Zhong

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.024

The First Principle Study of LixCoO2 at High Voltage

Lili Wang, Ye Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.025

Study on the Monitoring Method of Stress Point of Steel Tube Concrete Pipe Structure

Shiwei Jin

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.026

Performance of Four Coatings as Surface Strengthening Materials for Concrete Pavement

Shiwei Jin

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.027

Rapid Design of Composite Light Aircraft Wing Structure

Lei Kong

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.028

Research and Application of Low-rise Assembly Modular Building System

Haihua Su

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.029

Compensation of Axial Force Gap Between Induction Wheel and Impeller Combined With Impeller for Centrifugal Pump

Jing Shi

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.030

Analysis of Material Selection in Mechanical Design Processing

Liu Yanhua, Qian Na

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.031

Research on modern machining technology and precision machining technology

Liu Yanhua, Qian Na

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.032

Structure Design of Hydraulic Cylinder Support Based on Finite Element Analysis

Yuan Cheng, Zhigang Liu, Nan Zhang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.033

Application of Energy Saving in Small High-rise Building Based on BIM Model

Ya Qin

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.034

Research on Application of Green Manufacturing Technology in Mechanical Manufacturing Process

Wan Jun, Zhang Yu, Liu Guo-Wu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.035

Application of Mechanical Automatic Control Technology in Engineering Construction

Zhang Li

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.036

Thoughts on Modern Machining Technology and Precision Machining Technology

Mingtao Xu, Yuangui Ji

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.037

The Characteristics and Development Trend of Automation of Intelligent Machinery Design and Manufacturing

Fu Bo

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.038

Innovative Application of Air Conditioning Energy Saving Technology in Commercial Complex Building

Ran Junjun, Yuan Lei

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.039

Aircraft Composite Structure Static Strength Airworthiness Verification Technology

Kong Lei

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.040

Experimental Study on Compressive Strength and temperature Evolution of High Performance Fiber Reinforced Concrete

Li Xia, Shen Xinggang

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.041

Application of Digital Surveying and Mapping Technology in Construction Engineering Survey

Liu Xiahong

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.042

Application of Anti Leakage Technology in Building Construction

Yongqian Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.043

Research on Energy Saving and Cost Saving Optimization Strategy of HVAC System

Zhaoliang Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.044

Analysis of Construction Technology Based on Concrete Structure in Civil Engineering

Yong Feng

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.045

Analysis on Energy Saving and Environmental Protection Technology in Civil Engineering Construction

Lina Lu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.046

Damage Assessment of Structural Depression Caused by Ship Collision

Zhao Guizhu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/iccemm.2021.047

Application value of disposable anesthesia needle in amniocentesis during pregnancy

Xuan Zhao, Qian Zhang, Wenqi Chen, Jianglei Xu, Xiaohuan Yang, Xue Song, Cun Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.015

Investigation on traumatic psychological stress reaction of patients undergoing traumatic fracture surgery

Luping Liu, Xingxiong Jiang, Minglin Dong, Xiang Guo, Jingwu Liao

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.017

Meta-analysis of repair and reconstruction in the treatment of lateral ankle ligament injury

Yue Bolin, Wu Xuejun, Su Yongyue

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.018

Brain imaging genetic study on mental retardation and cognitive impairment in depression

Chen Jing, He Limei, Liu Yu, Zhu Jie, Shen Zonglin

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.019

Comparison of metabolic characteristics of lung cancer cells and normal somatic cells in low temperature environment

Yang Hao, Guo Yunrui, Zhang Yecai, Wang Decai, Zhang Guoyun, Hou Jiali, Yang Jianming

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.020

Study of bilateral simultaneous cementless total hip arthroplasty in ankylose spondylitis

Chen Pengyu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.021

Relationship between CD206 expression in macrophages and pathogenesis and prognosis of Hepatocellular carcinoma

Ran Fengming, Meng Qingyin

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.022

Effect of sputum suction in three different positions on oxygenation index and SPO2 recovery in elderly patients after cardiac surgery

Xiaolu Yang, Jie Tao, Xiangfeng Bai, Xinang Liu

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.023

Yan Qi, Liu Yan, Wang Wei

Abstract | References | PDF | HTML | Pub. Date: Apr 9, 2021

DOI: 10.25236/bmmss.2021.024

Research on the Organizational Forms and Development Status of Anhui's Agricultural Industrialization Management

Qiuxuan Wan

Abstract | References | PDF | HTML | Pub. Date: Apr 8, 2021

DOI: 10.25236/AJHSS.2021.040314

An Improved Multi-Agent System Based on GA and Its Application on Power System

Zhongyong Wang¹, Yingjing Xu²

Abstract | References | PDF | HTML | Pub. Date: Apr 8, 2021

DOI: 10.25236/IJFET.2021.030204

The Construction and Practice of Multi-Dimensional Innovation and Entrepreneurship Competence System for Engineering Specialty

Zhongyong Wang¹, Yingjing Xu²

Abstract | References | PDF | HTML | Pub. Date: Apr 8, 2021

DOI: 10.25236/FER.2021.040312

Implementing the teaching reform of electrical and electronic & electronics technology course by combining online and offline

Zhang Xiaoyan, Lan Bo, Zhang Lugang, Zhou Yiming

Abstract | References | PDF | HTML | Pub. Date: Apr 8, 2021

DOI: 10.25236/IJNDE.2021.030209