energy

"Pyrolysis of fossil or s... is... accompanied by char formation. In some cases, this is the point... being an example. ...[I]f pyrolysis were ...done to make gaseous or liquid fuels, and no... market existed for the char, it would be possible to... bury the char... [which] would sequester carbon..."

"[P]yrolysis of biomass to produce char for carbon sequestration has multiple benefits... The product... is... called or Agri-char, sometimes (dark earth)... Trials in Australia have produced a doubling... or tripling of crop production... [C]har is likely to retain some... , , and ... Biochars are very porous... taking up and holding moisture. ...By ...stimulating plant growth, biochar has a double impact... First, it... sequesters carbon. Second... increased growth of plants removes CO, from the atmosphere..."

"s are... ancient technology. Biomass pyrolysis would be "low tech." Farmers could build and install their own... Alternatively, a biochar kiln could be mounted on... a truck... and taken from farm to farm..."

"A comprehensive program..: harvesting and shipping biomass to a centralized biomass or plant within the economically limiting radius, and beyond... converting biomass to biochar in small, decentralized units."

"Pyrolysis of biomass, heavy petroleum fractions, , , and usually produces some amount of liquid product. Pyrolysis... without an externally added... [source] is constrained... Pyrolysis produces liquids, but leaves a residue of carbonaceous char or coke. Usually... gases also form. The... proportions of solid, liquid, and gas depend on the... feedstock and... reaction conditions."

"[L]iquids can be produced from coal by... pyrolysis... by dissolution... [i.e.] solvent extraction... or by reaction of coal with or with solvents... donating hydrogen (hydroliquification). All... constitute... coal-to-liquids (CTL) technology."

"In fuel chemistry... we deal with several kinds of bond, and mixtures of... different compounds. At temperatures high enough to drive pyrolysis of... one kind of bond... other kinds... break... [I]mmediate products may undergo... subsequent reactions. As a result, pyrolysis... give[s] complex mixtures of products... of little utility if the intent is to produce a single product..."

"Carbonization drives off moisture... with... low molecular weight organic compounds... from extractives and... pyrolysis of ... s. Condensing vapors from carbonization produces... ... a dilute solution of up to 50 small, polar (...[i.e.] water soluble) organic compounds. ...[M]ost important ...are , , and ."

"Pitch is a highly viscous residue remaining from wood pyrolysis... In the days of s, pitch was extremely valuable to seal the wood planking and for... where a tightly sticking, water-resistant material was needed."

"[E]ssential features... &bull; high heating and heat transfer rates... usually requires finely ground biomass feed &bull; carefully controlled... reaction temperature... [~]500C... vapour phase... short vapour residence typically [<]2 sec... &bull; rapid cooling of pyrolysis vapours to give... bio-oil product."

"In s, makes up 50-80% of the weight loss, the remaining consisting of gases, water and ."

"[P]roducts can be classified into two groups relative to the temperature dependence of the yields. , water and evolve at lower temperatures with ultimate yields that are essentially independent of temperature above 700°C. The second group... of gaseous hydrocarbons, and evolve at higher temperatures. The ultimate yield of these... continues increasing... up to 1,000°C or higher."

"Mongolia is rich in energy resources, but economic progress has been stifled for 34 years due to a lack of energy transition. We are now addressing this gap with a series of reforms, and the results are beginning to show."

"Once this (grid energy storage) construction is put into operation, the independence of the central power system will reach a new level. In the context of energy recovery, renewable energy sources, including the construction of hydropower plants, will be made a priority, and we will make every effort to complete the construction of the Erdeneburen Hydropower Plant and start the Eg River Hydropower Plant project. Also, construction projects such as the expansion of Thermal Power Plant 3 to increase its capacity by 75 MW and upgrade to 250 MW, Tavantolgoi Thermal Power Plant, Baganuur Power Plant and Choibalsan Thermal Power Plant to increase capacity by 50 MW will be kicked off without delay. Most recently, the construction of the 116 MW Amgalan Thermal Power Plant, which will provide thermal energy for the eastern region of Ulaanbaatar City, has been started."

"In 2024, we set a goal to increase Ulaanbaatar's energy capacity by 200 MW, and we achieved this goal within one year. Moreover, we managed to supply energy to the Central System ahead of schedule. This accomplishment ensures there will be no electricity restrictions during peak winter loads. Additionally, the Baganuur 50 MW Battery Storage Power Station began supplying energy to the Central System on 13 December 2024. This 50 MW Battery Storage Power Station operates in an energy-efficient manner, storing surplus electricity generated during night time and distributing it during peak hours."

"The fundamental scientific purpose of the LHC is to explore the inner structure of matter and the forces that govern its behavior, and thereby understand better the present content of the Universe and its evolution since the Big Bang, and possibly into the future. The unparalleled high energy of the LHC, which is designed to be 7 TeV per proton in each colliding beam, and its enormous collision rate, which is planned to attain about a billion collisions per second, will enable the LHC to examine rare processes occurring at very small distances inside matter. It will be a microscope able to explore the inner structure of matter on scales an order of magnitude smaller than any previous collider. The energies involved in the proton-proton collisions will be similar to those in particle collisions in the first trillionth of a second of the history of the Universe. By studying these processes in the laboratory, the LHC experiments will, in a sense, be looking further back into time than is possible with any telescope."

"… The relied not on the detection of photon pairs with a certain energy but on the detection of more of those pairs than expected. That reliance on probabilities is why the L.H.C. and other major collider experiments often have independent teams, working with separate detectors, analyzing the same types of collisions—to avoid biasing each other. It is also the reason for the ."

"With the discovery of the Higgs boson, the next burning question at the LHC is why its mass is so low. Nobody knows the answer to that question, but it is definitely the next hot topic for LHC physicists ..."

"On July 4, scientists working with data from ongoing experiments at the Large Hadron Collider (LHC) announced the discovery of a new particle "consistent with" the Higgs boson — a subatomic particle also colloquially referred to as the "God particle." After years of design and construction, the LHC first sent protons around its 27 kilometer (17 mile) underground tunnel in 2008. Four years later, the LHC's role in the discovery of the Higgs boson provides a final missing piece for the Standard Model of Particle Physics — a piece that may explain how otherwise massless subatomic particles can acquire mass. Gathered here are images from the construction of the massive $4-billion-dollar machine that allowed us peer so closely into the subatomic world."

"Bioelectricity is about the electrical phenomena of life processes, and is a parallel to the medical subject electrophysiology. One basic mechanism is the energy consuming cell membrane ion pumps polarising a cell, and the action potential generated if the cell is excited and ion channels open. The dipolarisation process generates current flow also in the extracellular volume, which again results in measurable biopotential differences in the tissue. An important part of the subject is intracellular and extracellular single cell measurements with microelecroeds. Single neuron activity and signal transmission can be studied by recording potentials with multiple microelectrode arrays. In addition to measure on endogenic sources, bioelectricty also comprises the use of active stimulating current carrying (CC) electrodes. Since bioelectricity is about life processes the experiments are per definition in vivo or ex vivo."

"The plasma membrane is a heterogeneous structure whose thickness ia around 75 Å and which bounds the cell. An important constituent is lipid, which often represents as much as 70% of the membrane volume (depending on cell type). The membrane lipid readily excludes the passage of ions; it remains for imbedded proteins to form the channels which permit exchange of ions between intracellular and extracellular space. For nerve and muscle, electrical activation is associated with the movement of sodium and potassium (and other) ions across membranes by means of these channels; the proteins not only facilitate the flow of each ion but they control the flow of each giving rise to the ' of the membrane."

"… once a healthy cell sort of abandons ship and decides that it's going to just be, like, a ravenous, invasive cancer cell, its voltage changes radically. And what you can do with an ion channel drug is change the electrical state of that cell by messing with the ion channels. And in tadpole experiments — and this is early days, but this is moving really fast. In tadpole experiments, they were able to use ion channel drugs to keep cells that had been genetically engineered to be tumors from changing their electrical voltage, right? And without doing any kind of genetic mucking around, they kept these tumors from forming in tadpoles that had been genetically engineered to express tumors."

"Waste biomass is a cheap and relatively abundant source of electrons for microbes capable of producing electrical current outside the cell. Rapidly developing microbial electrochemical technologies, such as microbial fuel cells, are part of a diverse platform of future sustainable energy and chemical production technologies. We review the key advances that will enable the use of exoelectrogenic microorganisms to generate biofuels, hydrogen gas, methane, and other valuable inorganic and organic chemicals. Moreover, we examine the key challenges for implementing these systems and compare them to similar renewable energy technologies. Although commercial development is already underway in several different applications, ranging from wastewater treatment to industrial chemical production, further research is needed regarding efficiency, scalability, system lifetimes, and reliability."

"Unlike CH4 and CO2, ammonia is not a greenhouse gas. In the atmosphere, it quickly forms hydrogen bonds to water vapor and returns to the ground in alkaline rain. However, NH3 is toxic, chills its surroundings rapidly on vaporizing, and releases heat on contact with water. Engineering a safe fuel tank for an ammonia-fueled vehicle would be a key priority. Ammonia is an excellent material for hydrogen storage. ... the volume density of hydrogen in liquid NH3 is more than 40% greater than in liquid H2, and the comparison becomes much more favorable when one considers the weight of the required fuel tank and peripherals. Unlike H2 gas, ammonia explodes in air only over a narrow range of concentrations. Shipping ammonia from production site to point-of-use does not require a great deal of cooling or high pressure. Thousands of miles of NH3 pipeline in the US stand as evidence that reliable infrastructure for NH3 transport and storage has been engineered. In sum, liquid NH3 is not just an excellent hydrogen-storage material but also an ideal medium for moving hydrogenic energy from place to place."

"Although in many ways hydrogen is an attractive replacement for fossil fuels, it does not occur in nature as the fuel H2. Rather, it occurs in chemical compounds like water or hydrocarbons that must be chemically transformed to yield H2. Hydrogen, like electricity, is a carrier of energy, and like electricity, it must be produced from a natural resource. At present, most of the world’s hydrogen is produced from natural gas by a process called steam reforming. However, producing hydrogen from fossil fuels would rob the hydrogen economy of much of its raison d’être: Steam reforming does not reduce the use of fossil fuels but rather shifts them from end use to an earlier production step; and it still releases carbon to the environment in the form of CO2. Thus, to achieve the benefits of the hydrogen economy, we must ultimately produce hydrogen from non-fossil resources, such as water, using a renewable energy source."

"One alternative to fossil fuels is ‘green’ hydrogen, which can be produced through water electrolysis by using an electric current to split water into hydrogen and oxygen with no greenhouse gas emissions, provided the electricity used to power the process is entirely from renewables. Hydrogen’s high mass energy density, light weight, and facile electrochemical conversion allow it to carry energy across geographical regions through pipelines or in the form of liquid fuels like ammonia on freight ships ... Across sectors as it can be used as a chemical feedstock, burned for heat, used as a reagent for synthetic fuel production, or converted back to electricity through fuel cells. Furthermore, hydrogen’s long-term energy storage capacity in tanks or underground caverns ... makes it one of the only green technologies that can store energy across seasons."

"The medium of energy transport from an atomic reactor to sites at which energy is required should not be electricity, but hydrogen. The term "hydrogen economy" applies to the energetic, ecological, and economic aspects of this concept. The concept envisages reactors held on platforms floating on water. They are in water sufficiently deep to make heat dissipation easy/ The electricity they make would be converted on site to hydrogen and oxygen by hydrolysis. The hydrogen would be piped to distribution stations and thereafter sent to factory and home. Reconversion to electricity would take place in on-site fuel cells, the only side product ebing pure water."

"Already in 1874, Jules Verne in his novel The Mysterious Island, lets the engineer Cyrus Harding reply when asked what mankind will burn instead of coal, once it has been depleted: water decomposed into its primitive elements. ... and decomposed doubtless, by electricity ... Yes, my friends, I believe that water will one day be employed as fuel, that hydrogen and oxygen which constitute it, used singly or together, will furnish an inexhaustible source of heat and light, of an intensity of which coal is not capable. Today's energy and transport system, which is based mainly on fossil fuels, can in no way be evaluated as sustainable. In the light of the projected increase of global energy demand, concerns over energy supply security, climate change, local air pollution and increasing prices of energy services are having a growing impact on policy making throughout the world. At present, oil, with a share of more than one third in the global primary energy mix, is still the largest primary fuel and covers more than 95% of the energy demand in the transport sector."

"While industry players have already started the market introduction of hydrogen fuel cell systems, including fuel cell electric vehicles and micro-combined heat and power devices, the use of hydrogen at grid scale requires the challenges of clean hydrogen production, bulk storage and distribution to be resolved. Ultimately, greater government support, in partnership with industry and academia, is still needed to realize hydrogen's potential across all economic sectors."

"There are three different primary energy-supply system classes which may be used to implement the hydrogen economy, namely, fossil fuels (coal, petroleum, natural gas, and as yet largely unused supplies such as shale oil, oil from tar sands, natural gas from geo-pressured locations, etc.), nuclear reactors including fission reactors and breeders or fusion nuclear reactors over the very long term, and renewable energy sources (including hydroelectric power systems, wind-energy systems, ocean thermal energy conversion systems, geothermal resources, and a host of direct solar energy-conversion systems including biomass production, photovoltaic energy conversion, solar thermal systems, etc.). Examination of present costs of hydrogen production by any of these means shows that the hydrogen economy favored by people searching for a non-polluting gaseous or liquid energy carrier will not be developed without new discoveries or innovations. Hydrogen may become an important market entry in a world with most of the electricity generated in nuclear fission or breeder reactors when high-temperature waste heat is used to dissociate water in chemical cycles or new inventions and innovations lead to low-cost hydrogen production by applying as yet uneconomical renewable solar techniques that are suitable for large-scale production such as direct water photolysis with suitably tailored band gaps on semiconductors or low-cost electricity supplies generated on ocean-based platforms using temperature differences in the tropical seas."

"But as I was... too much devoted to pure phenomenology to inquire more closely into the relation between entropy and probability, I felt compelled to limit myself to the available experimental results. Now, at that time... 1899, interest was centred on the law of the distribution of energy... proposed by W. Wien... On calculating the relation following from this law between the entropy and energy of a resonator the remarkable result is obtained that the reciprocal value of the above differential coeffcient... R, is proportional to the energy. This extremely simple relation can be regarded as an adequate expression of Wien's law..."

"[M]y previous studies on the second law of thermodynamics served me here... in that my first impulse was to bring not the temperature but the entropy of the resonator into relation with its energy, more accurately not the entropy itself but its second derivative with respect to the energy... [T]his differential coefficient... has a direct physical significance for the irreversibility of the exchange of energy between the resonator and the radiation."

"I was... occupied with the task of giving it a real physical meaning, and this... led me, along Boltzmann's line... to the consideration of the relation between entropy and probability... after some weeks of the most intense work of my life clearness began to dawn... and an unexpected view revealed itself..."

"He sat in the window thinking. Man has a for order. Keys in one pocket, change in another. Mandolins are tuned G D A E. The physical world has a tropism for disorder, entropy. Man against Nature . . . the battle of the centuries. Keys yearn to mix with change. Mandolins strive to get out of tune. Every order has within it the germ of destruction. All order is doomed, yet the battle is worth while."

"Progress imposes not only new possibilities for the future but new restrictions. It seems almost as if progress itself and our fight against the increase of entropy intrinsically must end in the downhill path from which we are trying to escape."

"Revolution is everywhere, in everything. It is infinite. There is no final revolution, no final number. The social revolution is only one of an infinite number of numbers: the law of revolution is not a social law, but an immeasurably greater one. It is a cosmic, universal law—like the laws of the and of the dissipation of energy (entropy). Some day, an exact formula for the law of revolution will be established. And in this formula, nations, classes, stars—and books—will be expressed as numerical quantities."

"Entropy, according to Boltzmann, is a measure of a physical probability, and the meaning of the second law of thermodynamics is that the more probable a state is, the more frequently will it occur in nature."

"One could... safely declare that 'Physics... can be defined as that subject which treats of the transformation of energy.' The philosophical version of Herakleitos and Empedokles... a continual cycle of changes and exchanges, had... crystallized into a quantitative physical theory. But this... picture... was... incomplete. For... there was a second, equally general and fundamental element in Nature—a directional one. This had first been formulated in the 1820s by the Mozart of modern physics, Sadi Carnot. ...Carnot started with the question: What proportion of the in any system is 'available' as a means of producing ? ...Carnot demonstrated ...a one-hundred-per-cent-efficient engine could exploit only a fraction of the heat supplied to it... A 'super-efficient' machine which could exploit all the heat supplied, would be (as Carnot's mathematics proved) a machine... one could get out of it more energy than was supplied... In an ... physical changes could at most be perfectly reversible; [but] in normal cases they would result in the progressive... 'degradation' of mechanical energy by the production of unavailable heat. To characterize this... Clausius coined the word ... [T]he directional principle of Carnot and Clausias (which gave precise expression to Newton's insight that 'motion is more easily lost than got, and is continually upon the decrease') became the Second Law of Thermodynamics."

"Why is entropy at the beginning of time so low, and the entropy in a black hole so high? ...We ...don't know that the entropy was low ...We don't even know if there was a beginning of time. ...[E]ntropy ...is the physicist's measure of how messy things are, so my room ...tends to get higher and higher entropy, messier and messier. Why... eggs fall on the floor and break, and not... fly up and unbreak? People argued about that for a very long time until the shocking insight... that it was very low 13.4 billion years ago at the time when those... baby pictures of our universe were given off... the cosmic microwave background. ...So somehow, our flow of time towards greater messiness has something to do with our origin of our universe? That... we have learned. ...But now the question of why was that is something where many of my colleagues disagree violently... I have written a paper... which... has very little support... anyway, ...if you take seriously the idea of inflation and also this theory that the does not collapse, according to Hugh Everett, you can do some math and get an explanation... but... it's a wonderful mystery, and I'm open to all ideas... and black holes... is something else we know very little... ultimately where there are great truths yet to be discovered."

"The third model regards mind as an information processing system. This is the model of mind subscribed to by cognitive psychologists and also to some extent by the ego psychologists. Since an acquisition of information entails maximization of negative entropy and complexity, this model of mind assumes mind to be an open system."

"Prigogine was also concerned with the broader philosophical issues raised by his work. In the 19th century the discovery of the second law of thermodynamics, with its prediction of a relentless movement of the universe toward a state of maximum entropy, generated a pessimistic attitude about nature and science. Prigogine felt that his discovery of self-organizing systems constituted a more optimistic interpretation of the consequences of thermodynamics. In addition, his work led to a new view of the role of time in the physical sciences."

"My greatest concern was what to call it. I thought of calling it 'information,' but the word was overly used, so I decided to call it 'uncertainty.' When I discussed it with John von Neumann, he had a better idea. Von Neumann told me, 'You should call it entropy, for two reasons. In the first place your uncertainty function has been used in statistical mechanics under that name, so it already has a name. In the second place, and more important, no one really knows what entropy really is, so in a debate you will always have the advantage.'"

"Entropy... we shall use this property in a specific and limited manner. ...The following are two implications of this property: 1. If a gas or vapor is compressed or expanded frictionlessly without adding or removing heat during the process, the entropy of the substance remains constant. 2. In the process implied in implication 1, the change in represents the amount of work per unit mass required by the compression or delivered by the expansion. Possibly the greatest possible use we shall have for entropy is to read lines of constant entropy on graphs in computing the work of compression in cycles."

"It is my thesis that the physical functioning of the living individual and the operation of some of the newer communication machines are precisely parallel in their analogous attempts to control entropy through . Both of them have sensory receptors as one stage in their cycle of operation: that is, in both of them there exists a special apparatus for collecting information from the outer world at low energy levels, and for making it available in the operation of the individual or of the machine. In both cases these external messages are not taken neat, but through the internal transforming powers of the apparatus, whether it be alive or dead. The information is then turned into a new form available for the further stages of performance. In both the animal and the machine this performance is made to be effective on the outer world. In both of them, their performed action on the outer world, and not merely their intended action, is reported back to the central regulatory apparatus. This complex of behavior is ignored by the average man, and in particular does not play the role that it should in our habitual analysis of society; for just as individual physical responses may be seen from this point of view, so may the organic responses of society itself. I do not mean that the sociologist is unaware of the existence and complex nature of communications in society, but until recently he has tended to overlook the extent to which they are the cement which binds its fabric together."

"[W]hat one measures are only the differences of entropy, and never entropy itself, and consequently one cannot speak... of the absolute entropy of a state. But nevertheless the introduction of an appropriately defined absolute magnitude of entropy is... recommended... by its help certain general laws can be formulated with great simplicity."

"The functional order maintained within living systems seems to defy the Second Law; nonequilibrium thermodynamics describes how such systems come to terms with entropy."

"My colleague Paul Glansdorff and I have investigated the problem as to if the results of near-equilibrium can be extrapolated to those of far - from-equilibrium situations and have arrived at a surprising conclusion: Contrary to what happens at equilibrium, or near equilibrium, systems far from equilibrium do not conform to any minimum principle that is valid for functions of free energy or entropy production."

"In an isolated system, which cannot exchange energy and matter with the surroundings, this tendency is expressed in terms of a function of the macroscopic state of the system: the entropy."

"Investigations of the entropy of substances at low temperatures have produced very important information regarding the structure of crystals, the work of Giauque and his collaborators being particularly noteworthy. For example, the observed entropy of crystalline hydrogen shows that even at very low temperatures the molecules of orthohydrogen in the crystal are rotating about as freely as in the gas; ... subsequent to this discovery the phenomenon of rotation of molecules in crystals was found to be not uncommon."

"Energy in the universe is constant and it can't be destroyed or created. [1st Law of Thermodynamics] ...You've got what's you've got. You've got entropy, which is a state of disorder, so things tend [from] order to disorder, but you're not going to destroy [the energy]. &bull; Energy goes from organized and usable to disorganized and unusable, and it seeks equilibrium. That's the 2nd law and discusses entropy, which is just decay and disorder and death and destruction and... all that good stuff! All the happy stuff! When you get to be my age, you kind of look forward to it so it's not necessarily that bad. &bull; Molecular motion stops, as does entropy, at . [3rd law] So when you get to absolute zero... nothing moves, which is why we can't really get there... because... we always take heat out of things by putting it into something else [at a lower temperature]... &bull; Hot goes to cold. (Energy moves from higher temperature to lower temperature.) &bull; High voltage goes to lower voltage. (Electrical current moves from high potential to low potential.) &bull; High pressure goes to low pressure."