News on China's scientific and technological development.

zgx09t

Junior Member
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As for Spain's history... they were never a key player in the scientific revolution/enlightenment.

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The above chart is from Charles Murray's Human Accomplishment. Italy was a central player but Spain was on the periphery. I never understood why they underperformed Italians so much in science, arts, technology etc. They industrialised much later than Italy, even today they are poorer. But I suppose that's another topic for another thread :)

I was purely looking at it from the standpoint of China, where Ming China till the end of Qing benefited to some degree from the trade with Spain in the form of silver from Zacatecas and Potosi silver mines.
Whatever manufacturing and industries Spain had, the practical basis of science and innovation, during Industrial Revolution were completely destroyed by the invading French in Napoleonic war, who were again outdone by the English, allies of Spain no less. English made it sure there was nothing left that could later compete with them.
The legacy of Spanish silver is today's symbol of dollar sing $. The two pillars on the real de a ocho, wrapped around in plus ultra, was where the symbol came from. It's very notable how England destroyed Spanish industries as an ally, not very different from what modern day US is trying to do to Chinese industries.
 

ansy1968

Brigadier
Registered Member
I was purely looking at it from the standpoint of China, where Ming China till the end of Qing benefited to some degree from the trade with Spain in the form of silver from Zacatecas and Potosi silver mines.
Whatever manufacturing and industries Spain had, the practical basis of science and innovation, during Industrial Revolution were completely destroyed by the invading French in Napoleonic war, who were again outdone by the English, allies of Spain no less. English made it sure there was nothing left that could later compete with them.
The legacy of Spanish silver is today's symbol of dollar sing $. The two pillars on the real de a ocho, wrapped around in plus ultra, was where the symbol came from. It's very notable how England destroyed Spanish industries as an ally, not very different from what modern day US is trying to do to Chinese industries.
@zgx09t yes thru the Galleon Trade and most of those tradable good are done by the Ancestor of most Hua Qiao here.
 

SanWenYu

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China made major breakthrough in synthesizing natural gas from coal. Recently a CNOOC facility in Xinjiang completed testing an indigeneously created methanation catalyst. The test ran stably at 110% of the designed capacity. The ratio of methane in the result gas reached "61.7mol%", almost 3 percent higher than the imported technology.

China has been trying to fully indigenize the synthetic natural gas technologies for many years. Methanation was the last and most difficult step in the whole process.

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记者8月8日从中国海油获悉,由中国海油下属的中海石油气电集团有限责任公司(简称“气电集团”)与西南化工研究设计院有限公司(简称“西南院”)联合研制的甲烷化催化剂在新疆庆华大型煤制天然气项目中首次实现110%满负荷平稳运行,甲烷浓度为61.7mol%,高于国外引进技术近3个百分点,标志着我国自主研制的大型煤制天然气甲烷化技术取得重大突破。

据介绍,煤制天然气是劣质煤经过气化—净化—甲烷化得到的清洁的合成天然气产品,作为新型煤化工的重要组成,是我国煤炭清洁化利用、保障民生用气的重要方向之一,关系国家能源安全和民生发展。甲烷化技术是把煤炭变为清洁的天然气的关键核心技术之一,对提高煤炭利用效率起到至关重要的作用。我国一直致力于煤制天然气全技术链的国产化,目前煤气化、变换、脱酸等技术都已实现国产化,但甲烷化技术开发难度大,多年来一直未取得突破。
 

alfreddango

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Latest -

The Shanghai Institute of Applied Physics has been given approval by China's Ministry of Ecology and Environment to commission an experimental thorium-powered molten-salt reactor in Wuwei city, Gansu province.
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wait, is this about
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same province, same city
isn't this supposed to be in the testing phase since 2021? the headline you posted makes it sound as if it has yet to be constructed
 

SanWenYu

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Chinese material scientists created a compound ceramic coating that has high efficiency in solar absorption and can work in temporature as high as 800 celsius.

Research paper published in English:
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As a vital component of existing and emerging solar-thermal technologies, spectrally
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(SSA) are currently limited to temperatures under 650 °C in vacuum and even lower in air due to the optical deterioration caused by temperature-related structural instability. Herein,
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materials (HfB2 and TiB2) are used to construct a double-layer SSA by a combinatorial
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co-sputtering approach. Subsequently, optical properties of the as-deposited SSA are reinforced by a pre-annealing strategy, exhibiting a high solar
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of 93.2% and suppressed
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of 8.9%, as well as a direction-independent absorption. More significantly, the pre-annealing SSA embraces outstanding thermal robustness, retaining superior optical performance after annealing at 800 °C for 240 h. Solar-thermal efficiency reaches as high as 68.6% under the irradiation of 100 suns, which equals or surpasses state-of-the-art SSA, capable of those high-temperature solar-thermal applications. The high surface temperature of more than 100 °C is captured under 1.5 suns, promising great potential in solar interface evaporation-related applications. This work also provides the fundamental basis for designing SSA and expands the application scope of the refractory ceramic materials, opening the avenue to further exploration of a family of composite refractory ceramic.

News report in Chinese:
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兰州化物所复合陶瓷基太阳能吸收涂层研究获进展​

从太阳辐射中获取能量,并将其转化为热能加以利用,是应对能源危机和环境污染、加快向可持续低碳世界过渡的前瞻性策略。
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(8.240, 0.08, 0.98%)选择性吸收涂层作为光热转化技术的重要组成部分,要求在太阳能光谱波段(0.3-2.5μm)具有高吸收率,同时在中红外波段(2.5-20μm)具有低发射率,从而使其表现出更高的光热转换效率,无论在高温太阳能热利用领域如太阳能光热发电,还是低温太阳能热利用领域如光热杀菌、除冰、海水淡化,均表现出应用前景。然而,目前大部分太阳能吸收涂层在真空条件下的热稳定性低于650 ℃,限制了其在高温条件下的应用。因此,开发一种具有优异热稳定性(大于700 ℃)、可扩展、结构简单、易于制备的太阳能吸收涂层具有重要意义。

近日,中国科学院兰州化学物理研究所清洁能源化学与材料研究室低碳能源材料组副研究员高祥虎、研究员刘刚团队,开发了一种基于复合陶瓷双层结构的高温太阳能选择性吸收涂层,其中复合陶瓷(TiB2-HfB2)作为吸收层、Al2O3作为减反射层(图1)。

该材料经过低温退火处理后,涂层的吸收率可提高到93.2%、发射率降低到8.9%,这是由于复合陶瓷层与减反射层之间形成了新的中间层,得到了一种具有三层光学梯度结构的太阳能吸收涂层,从而增强了涂层材料的光学性能。同时,该吸收涂层的吸收率对入射光角度不敏感,可在0-60°入射角范围内实现高效的太阳能转换,这对降低太阳能追踪系统的运行成本具有重要意义。

此外,低温退火处理后的吸收涂层具有优异的热稳定性(图2)。在800 ℃真空条件下退火处理240 h,该吸收涂层反射谱图没有明显变化,依然表现出良好的光学性能。该涂层在工作温度800 ℃、光照强度100 suns时,太阳能的光热转化效率为68.6%。

复合陶瓷(TiB2-HfB2)基太阳能选择性吸收涂层具有良好的光热转化效率、优异的热稳定性、结构简单、易于制备等优点,有望推动该材料在不同温度领域的太阳能光热发展。相关研究成果以Reinforcement optical performance and thermal tolerance in a TiB2-HfB2-based double-layer spectral selective absorber via a pre-annealing strategy为题,发表在Materials Today Physics上。研究工作得到中科院青年创新促进会、中科院科技服务网络计划区域重点项目和甘肃省科技重大专项的支持。
 

SanWenYu

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China built a 800 meters long rare earth permanent magnetic levitation experimental railway track in Xingguo county, Jiangxi.

Xingguo county is famous in China as the home land of 56 PLA generals in PRC's early history. The experimental train is decorated by 56 red stars to commemorate them.

Permanent magnetic levitation trains do not need to consume energy to float. This experimental train consists of two cars, with a total load capacity of 88 persons. The train has a max speed of 80km per hour.

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世界首条稀土永磁磁浮轨道交通工程试验线竣工​

8月9日9时30分,一列披着56颗星星的红白空轨列车悬浮在蓝色的轨道下缓缓驶出,由江西理工大学牵头,与兴国县人民政府联合中铁六院、中铁工业、国家稀土功能材料创新中心等单位共同完成的永磁磁浮轨道交通工程试验线——“红轨”在赣州市兴国县正式竣工。

“红轨”是迄今为止建成的世界首条永磁磁浮轨道交通系统工程试验线,试验线的建成标志着一个安全、便捷、高效的中低速、中低运量的新制式轨道交通系统诞生,具有完全自主知识产权。
创新“红轨”新在哪儿

“作为国际稀土永磁磁浮轨道系统的开拓者、永磁磁浮技术与轨道交通相结合的探索者,‘红轨’有望成为一种全生命周期成本低、性价比优的品质化、个性化、智能化交通运输系统,‘红轨’涵盖新材料、轨道交通、人工智能、无线通信、智能制造、电机驱动等多个战略性新兴产业。”竣工现场,江西理工大学党委书记、红轨技术首席专家杨斌介绍道。

据了解,“红轨”由稀土永磁悬浮系统、直线电机牵引驱动系统、智能定位与通信信号系统、运行控制与安全保障系统、轨道支撑与牵引供电系统、车辆装备系统等六大部分组成。“红轨”实现了零功率悬浮、低功耗运行;运行过程中不产生废气排放和电磁辐射,对人体和环境无伤害;应用5G通信、北斗定位、智能传感等信息技术,深度互联和智能融合列车、乘客、环境、设备等实体信息;有独立路权,不受其他交通工具的干扰;系统能耗和运维成本小,90%的材料可以循环利用。

此次建成的试验线正线长度约800米,均为钢构高架线。磁浮列车采用2辆编组,载客能力为坐席32个、定员88人,最高设计运行速度为80千米每小时。
 
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