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Product description

Your jewelry "testing expert"
The new second-generation diamond thermal conductivity meter distinguishes the jewelry according to the different thermal conductivity, and uses this to accurately measure the authenticity of various jewelry. Simple operation and high quality, this is really an exquisite gadget especially suitable for gem collectors.

Product name: The second generation thermal conductivity meter
Chip specifications: upgrade chip
Body material: engineering plastic
Probe material: alloy
Power supply specification: 9V battery (not including battery)

Drill pen size: 135×40×22mm
Weight: 60g
Cutting mirror size: 67×29×25mm
Weight: 35.5g

The package includes:
1*Drilling pen
1*cutting mirror
1*Diamond tray
1*protective cover
2*color paper

If you have any questions about testing, please contact us and we are willing to help you.

We guarantee the quality of each item and check it before shipment
Your satisfaction is very important to us. After receiving our products, if you have any questions, please contact us in time, we will reply and solve the problem within 24 hours.

enweQVQ Diamond Tester, Diamond Tester Pen, High Accuracy Diamon

The African Astronomical Society

Launched in 2019, the African Astronomical Society (AfAS) is a diverse and inclusive Pan-African society of professional and amateur astronomers, which aims to create a globally competitive astronomy community in Africa. The mission of AfAS is to be the voice of astronomy on the continent and to address the challenges faced by Africa through the promotion and advancement of astronomy. In this exclusive interview, we speak with the Society’s president, Dr Jamal Mimouni, who discusses astronomical achievements in Africa and how AfAS supports and advances astronomy research and education across the entire continent.

Dr Curtis R. Youngs – Improving Livestock Through Reproductive Technologies

Reproductive biotechnologies have contributed to many major advances in livestock production, and the proper application of these technologies can lead to livestock with superior genetic traits. This is vitally important given the high rates of malnourishment and poverty in developing countries, where communities could greatly benefit from an increase in meat and dairy products. Collaborating with scientists across the world, Dr Curtis R. Youngs of Iowa State University aims to increase the production of animal-derived foods in developing nations by applying reproductive biotechnologies to improve the efficiency and sustainability of livestock production.

Mophorn 47Inch/1200mm Tile Cutter Double Rail Manual Tile Cutter

Professor Lijun Wang – Developing Transportable and High-performance Atomic Clocks

By measuring the frequencies emitted as atoms transition between energy levels, atomic clocks are among the most advanced devices available for keeping time. In his research, Professor Lijun Wang at Tsinghua University, Beijing, explores how the stringent requirements for these devices can be met using easily transportable apparatus. By combining the latest technological advances in ion trapping, laser cooling, and magnetic shielding, his team has now achieved a design that far exceeds the performance of existing transportable clocks – potentially leading to new capabilities for both high-speed scientific measurements, precision time-keeping, and applications in satellite-based navigation.

Dr Francesca Lawson – Singing and Speaking: The Complex Intertwining of Music and Language

Dr Francesca Lawson from Brigham Young University has spent the last few decades researching the relationship between music and language. She has looked beyond Western culture and conducted many studies in the People’s Republic of China, focusing on music- and speech-based performance. Dr Lawson’s most recent work demonstrates how musicality is important in underpinning our communication, highlighting that when attitudes align, speech becomes rhythmically and musically coordinated.

Dr Xiaochuan Ma – Exploring the Evolution of Seafloor Sand Dunes

Marine sand is both a vital natural habitat and an essential resource. However, while desert dunes are comparatively easy to observe, their oceanic counterparts are still poorly understood. Dr Xiaochuan Ma and his colleagues at the Chinese Academy of Sciences in Qingdao are mapping the shifting sands of the seafloor and measuring their movement. By investigating how seafloor dunes respond to waves, tides, and typhoons, they can help decision-makers protect and manage this critical resource.

Scientia Issue #139

This important issue of Scientia takes an exciting look into the future of health and healthcare delivery across the world. It is with great pride that we celebrate the significant advances that have been achieved across the broad realms of health and healthcare despite the adversity caused by the global COVID-19 pandemic.

Scientia Issue #138

As the most complex organ in the human body, conditions affecting the brain can deleteriously severe impacts on people’s lives. In this riveting and thought-provoking issue of Scientia, we showcase the scientists who are charting new frontiers in psychological and brain sciences to build brighter futures and improve well-being for all.

Dr Egbert Giles Leigh, Jr – How Ecosystems are Built: Competition and Cooperation in Evolution

Despite the old adage ‘nice guys finish last’, cooperation is common in life – from the scale of genes or cells through to entire societies. Although these two ideas seem to contradict each other, Dr Egbert Giles Leigh Jr has demonstrated throughout his career at the Smithsonian Tropical Research Institute in Panama that working together has been the key to the success of multicellular life. Here, he explains his view of how competition and cooperation both played essential roles in bringing forth productive, diverse ecosystems.

Dr Kim de Mutsert – Identifying Effective Strategies to Protect Louisiana’s Precious Wetlands

The Louisiana coastal zone is the fastest-eroding wetland in the US. This region is home to a variety of vitally important fish species for local fishing industry and ecosystems, which are currently under threat. Conservation schemes have been proposed under the 2017 Louisiana Coastal Master Plan in an attempt to preserve coastal habitats and their inhabitants. Dr Kim de Mutsert of the University of Southern Mississippi and her colleagues use simulations to reveal how different management strategies will affect fish and shellfish up to 50 years from now.

We encourage all formats of sharing and republishing of our articles. Whether you want to host on your website, publication or blog, we welcome this. Find out more


Subscribe now!

SciComm Corner – Five Tips to Convey Complex Scientific Topics to Non-Expert Readers

In an age marked by fake news and sensationalist media communication, ensuring that accurate scientific information reaches the public is of utmost importance. The detrimental effects of inaccurate science communication have become particularly obvious during the COVID-19 pandemic, as countless individuals worldwide turned to the Internet to find out more about how fast the virus was spreading and what they could do to avoid contact with it.

#Scientists @IowaStateU are improving the efficiency & #sustainability of #livestock #farming in developing countries, through the use of reproductive #biotechnology. Their #research aims to combat malnutrition & improve #FoodSecurity. Listen here:

#Scientists @IowaStateU are improving the efficiency & #sustainability of #livestock #farming in developing countries, through the use of reproductive #biotechnology. Their #research aims to combat malnutrition & improve #FoodSecurity. Read more:


See: @scientia_social exclusive interview with the President of the @AfricaAstronomy , Prof Jamal Mimouni, on astronomical achievements in Africa and how AfAS contributes to supporting and advancing astronomy research and education across the continent

In this exclusive interview, we speak with Dr Jamal Mimouni, President of @AfricaAstronomy, who discusses #Africa's astronomical achievements, and describes how the Society advances #astronomy #research & #education across the entire continent:


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