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大香蕉综合伊人91新人

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JoVE Science Education

Engineering

Visual demonstrations of key scientific experiments

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8 Chapters

100+ Videos

550+ Multiple Choice Questions

Table of Contents

Bioengineering

15 Videos

121 Minutes

7:44

Overview of Biomaterials

75K views

7:25

Collagen Hydrogels

53.6K views

7:58

Electrospinning of Silk Biomaterials

9.6K views

8:28

Overview of BioMEM Devices

16.5K views

7:44

Microfabrication via Photolithography

11.4K views

7:53

Soft Lithography

11.2K views

7:42

Overview of Bioprocess Engineering

19.3K views

7:28

Synthetic Biology

10.4K views

9:40

Batch and Continuous Bioreactors

50.5K views

6:40

Overview of Biosensing

12.5K views

7:39

Electrochemical Biosensing

16.7K views

9:39

Optical Biosensing

13.8K views

6:51

Overview of Tissue Engineering

13.4K views

9:35

Histotypic Tissue Culture

12K views

8:45

Whole Organ Tissue Culture

14.5K views

Electrical Engineering

15 Videos

155 Minutes

Electrical Safety Precautions and Basic Equipment

9:36

Electrical Safety Precautions and Basic Equipment

145.6K views

10:41

Characterization of Magnetic Components

15.3K views

8:57

Introduction to the Power Pole Board

12.6K views

12:18

DC/DC Boost Converter

57.6K views

10:26

DC/DC Buck Converter

21.3K views

9:34

Flyback Converter

13.4K views

10:50

Single Phase Transformers

20.5K views

11:15

Single Phase Rectifiers

23.8K views

10:28

Thyristor Rectifier

17.8K views

9:51

Single Phase Inverter

18.1K views

9:29

DC Motors

23.7K views

11:18

AC Induction Motor Characterization

11.8K views

10:27

VFD-fed AC Induction Machine

7.1K views

9:02

AC Synchronous Machine Synchronization

21.8K views

11:19

AC Synchronous Machine Characterization

14.5K views

Mechanical Engineering

15 Videos

170 Minutes

11:30

Buoyancy and Drag on Immersed Bodies

30.5K views

13:10

Stability of Floating Vessels

23.8K views

10:50

Propulsion and Thrust

22.3K views

12:27

Piping Networks and Pressure Losses

59.3K views

10:57

Quenching and Boiling

8.2K views

9:15

Hydraulic Jumps

41.5K views

11:38

Heat Exchanger Analysis

28.4K views

12:09

Introduction to Refrigeration

25.2K views

9:17

Hot Wire Anemometry

16.1K views

10:05

Measuring Turbulent Flows

13.7K views

10:32

Visualization of Flow Past a Bluff Body

12.7K views

13:29

Jet Impinging on an Inclined Plate

10.9K views

Conservation of Energy Approach to System Analysis

10:16

Conservation of Energy Approach to System Analysis

7.5K views

Mass Conservation and Flow Rate Measurements

13:35

Mass Conservation and Flow Rate Measurements

23.2K views

Determination of Impingement Forces on a Flat Plate with the Control Volume Method

11:31

Determination of Impingement Forces on a Flat Plate with the Control Volume Method

26.2K views

Chemical Engineering

15 Videos

144 Minutes

Testing the Heat Transfer Efficiency of a Finned-tube Heat Exchanger

8:35

Testing the Heat Transfer Efficiency of a Finned-tube Heat Exchanger

18.1K views

Using a Tray Dryer to Investigate Convective and Conductive Heat Transfer

7:41

Using a Tray Dryer to Investigate Convective and Conductive Heat Transfer

44.2K views

8:04

Viscosity of Propylene Glycol Solutions

33.4K views

9:11

Porosimetry of a Silica Alumina Powder

9.8K views

Demonstration of the Power Law Model Through Extrusion

10:22

Demonstration of the Power Law Model Through Extrusion

10.5K views

7:51

Gas Absorber

37K views

11:32

Vapor-liquid Equilibrium

91K views

The Effect of Reflux Ratio on Tray Distillation Efficiency

11:20

The Effect of Reflux Ratio on Tray Distillation Efficiency

78.5K views

9:21

Efficiency of Liquid-liquid Extraction

48.8K views

11:00

Liquid Phase Reactor: Sucrose Inversion

9.8K views

Crystallization of Salicylic Acid via Chemical Modification

11:41

Crystallization of Salicylic Acid via Chemical Modification

24.4K views

Single and Two-phase Flow in a Packed Bed Reactor

10:39

Single and Two-phase Flow in a Packed Bed Reactor

19.1K views

Kinetics of Addition Polymerization to Polydimethylsiloxane

10:01

Kinetics of Addition Polymerization to Polydimethylsiloxane

16.5K views

Catalytic Reactor: Hydrogenation of Ethylene

8:56

Catalytic Reactor: Hydrogenation of Ethylene

30.7K views

Evaluating the Heat Transfer of a Spin-and-Chill

8:44

Evaluating the Heat Transfer of a Spin-and-Chill

7.5K views

Structural Engineering

15 Videos

156 Minutes

11:23

Material Constants

23.8K views

13:26

Stress-Strain Characteristics of Steels

113.6K views

Stress-Strain Characteristics of Aluminum

14:53

Stress-Strain Characteristics of Aluminum

90.1K views

Charpy Impact Test of Cold Formed and Hot Rolled Steels Under Diverse Temperature Conditions

7:32

Charpy Impact Test of Cold Formed and Hot Rolled Steels Under Diverse Temperature Conditions

32.6K views

Rockwell Hardness Test and the Effect of Treatment on Steel

8:01

Rockwell Hardness Test and the Effect of Treatment on Steel

28.8K views

11:14

Buckling of Steel Columns

36.6K views

12:03

Dynamics of Structures

11.9K views

9:58

Fatigue of Metals

42.3K views

8:44

Tension Tests of Polymers

26.5K views

Tension Test of Fiber-Reinforced Polymeric Materials

8:42

Tension Test of Fiber-Reinforced Polymeric Materials

15.4K views

Aggregates for Concrete and Asphaltic Mixes

10:10

Aggregates for Concrete and Asphaltic Mixes

12.6K views

11:23

Tests on Fresh Concrete

26.3K views

8:08

Compression Tests on Hardened Concrete

15.6K views

10:09

Tests of Hardened Concrete in Tension

23.9K views

11:08

Tests on Wood

33.4K views

Biomedical Engineering

15 Videos

163 Minutes

Imaging Biological Samples with Optical and Confocal Microscopy

10:48

Imaging Biological Samples with Optical and Confocal Microscopy

36.5K views

9:02

SEM Imaging of Biological Samples

24.3K views

Biodistribution of Nano-drug Carriers: Applications of SEM

13:29

Biodistribution of Nano-drug Carriers: Applications of SEM

9.7K views

High-frequency Ultrasound Imaging of the Abdominal Aorta

14:20

High-frequency Ultrasound Imaging of the Abdominal Aorta

14.9K views

Quantitative Strain Mapping of an Abdominal Aortic Aneurysm

10:24

Quantitative Strain Mapping of an Abdominal Aortic Aneurysm

4.7K views

Photoacoustic Tomography to Image Blood and Lipids in the Infrarenal Aorta

8:38

Photoacoustic Tomography to Image Blood and Lipids in the Infrarenal Aorta

5.9K views

11:37

Cardiac Magnetic Resonance Imaging

15.2K views

Computational Fluid Dynamics Simulations of Blood Flow in a Cerebral Aneurysm

12:39

Computational Fluid Dynamics Simulations of Blood Flow in a Cerebral Aneurysm

12.1K views

Near-infrared Fluorescence Imaging of Abdominal Aortic Aneurysms

10:12

Near-infrared Fluorescence Imaging of Abdominal Aortic Aneurysms

8.5K views

Noninvasive Blood Pressure Measurement Techniques

9:31

Noninvasive Blood Pressure Measurement Techniques

12.3K views

Acquisition and Analysis of an ECG (electrocardiography) Signal

11:17

Acquisition and Analysis of an ECG (electrocardiography) Signal

108.6K views

Tensile Strength of Resorbable Biomaterials

10:09

Tensile Strength of Resorbable Biomaterials

7.8K views

11:18

Micro-CT Imaging of a Mouse Spinal Cord

8.4K views

Visualization of Knee Joint Degeneration after Non-invasive ACL Injury in Rats

11:09

Visualization of Knee Joint Degeneration after Non-invasive ACL Injury in Rats

8.4K views

Combined SPECT and CT Imaging to Visualize Cardiac Functionality

9:08

Combined SPECT and CT Imaging to Visualize Cardiac Functionality

11.3K views

Materials Engineering

14 Videos

126 Minutes

Optical Materialography Part 1: Sample Preparation

7:34

Optical Materialography Part 1: Sample Preparation

15.7K views

Optical Materialography Part 2: Image Analysis

7:46

Optical Materialography Part 2: Image Analysis

11.3K views

9:20

X-ray Photoelectron Spectroscopy

22.4K views

$X-ray Diffraction$

9:31

X-ray Diffraction

90.7K views

9:30

Focused Ion Beams

10.5K views

Directional Solidification and Phase Stabilization

8:32

Directional Solidification and Phase Stabilization

6.8K views

12:03

Differential Scanning Calorimetry

38.9K views

Thermal Diffusivity and the Laser Flash Method

10:32

Thermal Diffusivity and the Laser Flash Method

13.6K views

7:58

Electroplating of Thin Films

20.3K views

Analysis of Thermal Expansion via Dilatometry

9:42

Analysis of Thermal Expansion via Dilatometry

16.2K views

8:59

Electrochemical Impedance Spectroscopy

23.8K views

Ceramic-matrix Composite Materials and Their Bending Properties

9:59

Ceramic-matrix Composite Materials and Their Bending Properties

8.5K views

Nanocrystalline Alloys and Nano-grain Size Stability

6:52

Nanocrystalline Alloys and Nano-grain Size Stability

5.3K views

8:33

Hydrogel Synthesis

24.1K views

Aeronautical Engineering

15 Videos

137 Minutes

Aerodynamic Performance of a Model Aircraft: The DC-6B

14:02

Aerodynamic Performance of a Model Aircraft: The DC-6B

8.4K views

Propeller Characterization: Variations in Pitch, Diameter, and Blade Number on Performance

11:37

Propeller Characterization: Variations in Pitch, Diameter, and Blade Number on Performance

26.7K views

Airfoil Behavior: Pressure Distribution over a Clark Y-14 Wing

7:59

Airfoil Behavior: Pressure Distribution over a Clark Y-14 Wing

21.5K views

Clark Y-14 Wing Performance: Deployment of High-lift Devices (Flaps and Slats)

9:18

Clark Y-14 Wing Performance: Deployment of High-lift Devices (Flaps and Slats)

13.8K views

Turbulence Sphere Method: Evaluating Wind Tunnel Flow Quality

9:23

Turbulence Sphere Method: Evaluating Wind Tunnel Flow Quality

8.8K views

Cross Cylindrical Flow: Measuring Pressure Distribution and Estimating Drag Coefficients

8:57

Cross Cylindrical Flow: Measuring Pressure Distribution and Estimating Drag Coefficients

16.4K views

Nozzle Analysis: Variations in Mach Number and Pressure Along a Converging and a Converging-diverging Nozzle

10:22

Nozzle Analysis: Variations in Mach Number and Pressure Along a Converging and a Converging-diverging Nozzle

38.3K views

Schlieren Imaging: A Technique to Visualize Supersonic Flow Features

7:34

Schlieren Imaging: A Technique to Visualize Supersonic Flow Features

12.3K views

Flow Visualization in a Water Tunnel: Observing the Leading-edge Vortex Over a Delta Wing

7:01

Flow Visualization in a Water Tunnel: Observing the Leading-edge Vortex Over a Delta Wing

8.5K views

Surface Dye Flow Visualization: A Qualitative Method to Observe Streakline Patterns in Supersonic Flow

8:12

Surface Dye Flow Visualization: A Qualitative Method to Observe Streakline Patterns in Supersonic Flow

5K views

Pitot-static Tube: A Device to Measure Air Flow Speed

7:28

Pitot-static Tube: A Device to Measure Air Flow Speed

50K views

Constant Temperature Anemometry: A Tool to Study Turbulent Boundary Layer Flow

9:29

Constant Temperature Anemometry: A Tool to Study Turbulent Boundary Layer Flow

7.3K views

Pressure Transducer: Calibration Using a Pitot-static Tube

8:12

Pressure Transducer: Calibration Using a Pitot-static Tube

8.6K views

Real-time Flight Control: Embedded Sensor Calibration and Data Acquisition

8:36

Real-time Flight Control: Embedded Sensor Calibration and Data Acquisition

10.4K views

Multicopter Aerodynamics: Characterizing Thrust on a Hexacopter

9:48

Multicopter Aerodynamics: Characterizing Thrust on a Hexacopter

9.3K views

Why Choose JoVE Science Education

Better learning outcomes for students

Peer review studies showed that students’ test grades are 2X higher after using JoVE video.

Easier teaching

90% of students report higher engagement with subject when using JoVE video

Visualized experiments

Step-by-step video demonstrations of key lab experiments and theory behind.

‘I beg you to call the boy back, and not send that note,’ she said. ‘I hate to think of your doing that. It isn’t the act of——’ "Never mind, we must have a long talk. At present there is a verbal message for me; what is it?" "Do you think she'd come? She'd have gone to Ship Island if I had caught her." "Why should I deny it?" Leona said boldly. "My husband was murdered. He was slain by Dr. Gordon Bruce for the sake of his money." The reformed system of education was to be not only moral and religious but also severely scientific. The place given to mathematics as the foundation of a right intellectual training is most remarkable, and shows how truly Plato apprehended the conditions under which knowledge is acquired and enlarged. Here, as in other respects, he is, more even than Aristotle, the precursor of Auguste Comte. He arranges the mathematical sciences, so far as they then existed, in their logical order; and his remarks on the most general ideas suggested by astronomy read like a divination of rational mechanics. That a recommendation of such studies should be put into the mouth of Socrates is a striking incongruity. The older Plato grew the farther he seems to have advanced from the humanist to the naturalistic point of view; and, had he been willing to confess it, Hippias and Prodicus were the teachers with whom he finally found himself most in sympathy. And turned their savage life to civil ways; The one at the end accomplishing a graceful pirouette is me--I mean He made his calculation. Countless times his nerves had been pulled by sounds which turned out on second thought to be only the contracting of the hot metal, subjected to the sun all day, as the evening breeze robbed it of its warmth. As he had made Mrs. Campbell his confidante from the first, he told her about this too, now, and finished with the half-helpless, half-amused query as to what he should do. "It may be any length of time before she decides that she is old enough, and it never seems to occur to her that this state of things can't go on forever, that she is imposing upon you." "And the most serious part of it," he added after a while, "is that she does not love me." "Will the guerrillas begin shootin' at us as soon's we cross the river?" "But we didn't lose 'em in action, and to say so'd be a lie," answered Si, whose conscience had none of the easy elasticity of his partner's. "We could report 'em burnt up by lightnin','but we won't. They was lost by sheer, dumbed carelessness, that me and you and the boys should knowed better than to've allowed. That's all there is of it, and that's what I'm goin' to report, if I have to." The battery was one of the oldest and best in the army, and its "fire discipline" was superb. She felt her heart grow sick. If she had been happy for four hours, why, in God's name, had they not passed like four hours instead of like four minutes? "Unto the ends of the earth—Hastings. There's a friend of Ades there wot'll guide me into the Spirit's ways." HoME 大香蕉综合伊人91新人 ENTER NUMBET 0015www.artorias.com.cn
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