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"The proton–proton chain reaction is one of several fusion reactions by which stars convert hydrogen to helium, the primary alternative being the CNO cycle. The proton–proton chain dominates in stars the size of the Sun or smaller.
In general, proton–proton fusion can occur only if the temperature (i.e. kinetic energy) of the protons is high enough to overcome their mutual electrostatic or Coulomb repulsion.
In the Sun, deuterium-producing events are so rare (diprotons, the much more common result of nuclear reactions within the star, immediately decay back into two protons) that a complete conversion of the star's hydrogen would take more than 1010 (ten billion) years at the prevailing conditions of its core. The fact that the Sun is still shining is due to the slow nature of this reaction; if it went more quickly, the Sun would have exhausted its hydrogen long ago." [Proton–proton chain reaction. Wikipedia]
The nuclear reaction diagram example "Proton-proton chain reaction" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Physics solution from the Science and Education area of ConceptDraw Solution Park.
Proton-proton chain reaction diagram
Proton-proton chain reaction diagram, positron, gamma particle, electron neutrino,
Used Solutions

Physics Symbols

Physics Symbols
ConceptDraw PRO diagramming and vector drawing software extended with Physics solution from the Science and Education area is a powerful software for creating various physics diagrams. Physics solution provides all tools that you can need for physics diagrams designing. It includes 3 libraries with predesigned vector physics symbols: Optics Library, Mechanics Library and Nuclear Physics Library.

physics symbols, physics diagrams Physics

physics symbols, physics diagrams
Physics solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for drawing the physical illustrations, diagrams and charts.

Cross-Functional Flowchart

Cross-Functional Flowchart. flowchart maker
Use of Cross-Functional Flowchart is a clear way of showing each team member’s responsibilities and how processes get shared or transferred between different responsible people, teams and departments. Use the best flowchart maker ConceptDraw PRO with a range of standardized cross-functional flowchart symbols to create the Cross-Functional Flowcharts simply and to visualize the relationship between a business process and the functional units responsible for that process. To draw the most quickly Cross-Functional Flowcharts, Cross Functional Process Maps, or Cross Functional Process Flow Diagrams, start with a Cross-functional flowchart samples and templates from ConceptDraw Solution Park. The ConceptDraw Arrows10 and RapidDraw technologies will be also useful for you in drawing. ConceptDraw PRO supports designing both types - horizontal and vertical Cross-functional flowcharts. A vertical layout makes the accents mainly on the functional units while a horizontal layout - on the process. If you need a Visio alternative in Mac OS X, try ConceptDraw PRO. Its interface is very intuitive and it’s actually much easier to use than Visio, yet somehow it’s just as powerful if not more so. ConceptDraw PRO performs professional quality work and seamless Visio interaction.
How to Draw a Cross Functional Flowchart using visio alternative ConceptDraw PRO as visio for mac
How to Draw a Cross Functional Flowchart using visio alternative ConceptDraw PRO as visio for mac

Optimize a Workflow

Template - Workflow diagram
The first step to optimize a workflow is to get its visual depiction. Then you can analyse and optimize the workflow making changes to your workflow diagram. We recommend to use ConceptDraw PRO software extended with the Workflow Diagram solution to visualize and optimize your workflow. It allows you produce easy-to-change scalable vector graphic workflow and then present it to your team or partners.

chemical drawings, chemistry equation symbols, chemical drawing software Chemistry

chemical drawings, chemistry equation symbols, chemical drawing software
This solution extends ConceptDraw PRO software with samples, template and libraries of vector stencils for drawing the Chemistry Illustrations for science and education.

Biology Drawing Software

Biology Drawing Software
Biology is incredibly interesting and useful natural science which studies all living things on the earth (people, animals, plants), structure, functions, interactions, evolution of living organisms. Biologists of the whole world use actively illustrations and drawings in your science and education activity. To facilitate their task of biology drawing, ConceptDraw PRO diagramming and vector drawing software was extended with Biology solution from the Science and Education area. Now, ConceptDraw PRO is a powerful biology drawing software.

Types of Flowcharts

Types of Flowcharts
A Flowchart is a graphical representation of process, algorithm, workflow or step-by-step solution of the problem. It shows the steps as boxes of various kinds and connects them by arrows in a defined order depicting a flow. There are twelve main Flowchart types: Basic Flowchart, Business Process Modeling Diagram (BPMN), Cross Functional Flowchart, Data Flow Diagram (DFD), IDEF (Integrated DEFinition) Flowchart, Event-driven Process Chain (EPC) Diagram, Influence Diagram (ID), Swimlane Flowchart, Process Flow Diagram (PFD), Specification and Description Language (SDL) Diagram, Value Stream Mapping, Workflow Diagram. Using the Flowcharts solution from the Diagrams area of ConceptDraw Solution Park you can easy and quickly design a Flowchart of any of these types. This solution offers a lot of special predesigned vector symbols for each of these widely used notations. They will make the drawing process of Flowcharts much easier than ever. Pay also attention for the included collection of ready Flowchart examples, samples and quick-start templates. This is business process improvement tools. If you are looking for MS Visio for your Mac, then you are out of luck, because it hasn't been released yet. However, you can use Visio alternatives that can successfully replace its functions. ConceptDraw PRO is an alternative to MS Visio for Mac that provides powerful features and intuitive user interface for the same.
How to Simplify Flow Charting
How to Simplify Flow Charting

Venn diagram, draw logical relations Venn Diagrams

Venn diagram, draw logical relations
Venn Diagrams are actively used to illustrate simple set relationships in set theory and probability theory, logic and statistics, mathematics and computer science, linguistics, sociology, and marketing. Venn Diagrams are also often used to visually summarize the status and future viability of a project.

Diagramming Software for Design UML Communication Diagrams

uml comunication diagram for mac
UML Communication Diagram depicts the interactions between objects or parts in terms of sequenced messages and describes both the static structure and dynamic behavior of a system.

biological image, biology drawing, biology symbols Biology

biological image, biology drawing, biology symbols
Biology solution extends ConceptDraw PRO software with samples, templates and libraries containing biological vector symbols, to help you create scientific and educational designs in the field of biology.

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams Chemical and Process Engineering

chemical engineering, process engineering, process flow diagram symbols, process and instrumentation diagram, process diagrams
This chemical engineering solution extends ConceptDraw PRO v.9.5 (or later) with process flow diagram symbols, samples, process diagrams templates and libraries of design elements for creating process and instrumentation diagrams, block flow diagrams (BFD

Swot Analysis Examples

SWOT analysis block
SWOT analysis is an advanced plan making methodology for detection the Strengths and Weaknesses, Opportunities and Threats, that are involved in a project. SWOT analysis possesses a wide variety of real and potential applications and is a key part of any business planning and analysis. SWOT analysis uses as a visual tool the SWOT diagrams and SWOT matrices. ConceptDraw PRO software with SWOT and TOWS Matrix Diagrams solution provides a lot of SWOT analysis examples and samples, and also numerous collection of built-in SWOT templates, which will be the good start in your self-depending drawing and the perfect source of inspiration. You can always start to design your SWOT diagrams from the blank sheet using the included predesigned vector objects, but in many cases to save the time and efforts for SWOT diagramming would be preferable to use the ready example the most appropriate to your needs. Customizing the proposed SWOT diagrams you will achieve a great success in drawing SWOT matrices of any style and complexity.

UML Use Case Diagram Example Social Networking Sites Project

UML Diagrams Social Networking Sites Project
UML Diagrams Social Networking Sites Project. This sample was created in ConceptDraw PRO diagramming and vector drawing software using the UML Use Case Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park. This sample shows the Facebook Socio-health system and is used at the projection and creating of the social networking sites.

Positioning Map

Positioning Map
ConceptDraw PRO is a powerful diagramming and vector drawing software. Extended with Matrices Solution from the Marketing Area of ConceptDraw Solution Park it became the best software for quick and easy designing various types of Matrix Diagrams, including Positioning Map.