75 results about "Relative mass" patented technology

The invention aims to provide a catalyst for preparing phenylethane from dilute ethylene and benzene alkylation and a method for preparing the same. The catalyst is characterized in that the crystal is formed by a small crystal grain ZSM-5 molecular screen with the crystal grain size of between 0.15 and 0.8 mircometer and a bonding agent of aluminum oxide and silicon dioxide, and then prepared by steps of vapor / ammonia vapor treatment and acid treatment, wherein the relative mass ratio of the ZSM-5 molecular screen to the bonding agent of the aluminum oxide and the silicon dioxide is (5-9):(1-5). When the catalyst is used for preparing the phenylethane from the dilute ethylene and the benzene alkylation in dry gas, because the crystal grain size of the used molecular screen is small, the number of acidic sites and the acidic utilization ratio of the catalyst are high, and simultaneously the pore canal of the molecular screen is short, which is favorable for dispersion of reactants and products, so that the catalyst has the characteristics of high activity, low reaction temperature, high selectivity of target products, low content of xylene impurity in the product and good satiability.

The invention discloses a formula based on modified hydrophobic SiO2 (silicon dioxide) self-cleaning paint. The formula is characterized by comprising the following components by weight percent: 25 to 45 percent of fluorosilicone resin, 15 to 30 percent of hydroxyl-terminated dimethyl siloxane-coated modified nano SiO2 and 30 to 55 percent of aromatic ester mixed solvent, and the formula also comprises a curing agent, and the relative mass ratio range of the curing agent and the components is (0.4:100)-(0.72:100). The hydroxyl-terminated dimethyl siloxane is used for coating and modifying the nano gas-phase SiO2, so that the hydrophobic property is improved; and meanwhile, due to the cladding and modification of the macromolecule polymer, the clustering phenomenon caused by the doping of the nano SiO2 in the polymer can be inhibited, the dispersing efficiency of the nano SiO2 can be improved, and the hydrophobic property of the surface of a paint film can be promoted.

Aspects of the present invention are directed to computer-implemented techniques for performing data compression and conversion between data formats of varying degrees of precision, and more particularly for improving the inferencing (application) of artificial neural networks using a reduced precision (e.g., INT8) data format. Embodiments of the present invention generate candidate conversions of data output, then employ a relative measure of quality to identify the candidate conversion with the greatest accuracy (i.e., least divergence from the original higher precision values). The representation can be then be used during inference to perform computations on the resulting output data.

The invention discloses a coating for steel construction buildings and a preparation method thereof. The coating comprises the components in proportion ( by relative mass parts) as follows: 26-32 of film formation substances, 15-23 of a dehydration carbonizing catalyst, 8-15 of a carbonizing agent, 6-12 of a foaming agent, 2-5 of pigments and fillers, 2-5 of compound zinc phosphate, 1.5-5.5 of modified expansible graphite, 1.6-5.5 of crystal whisker, 0.9-1.2 of a film formation additive and 4.2-9.1 of a water-based curing agent. The expansible graphite and the crystal whisker system are utilized by the invention, the expansible graphite can greatly improve the expansion multiplying power of the water-based fire retardant coating and the strength of a crystal whicker strengthening carbon layer, the graphite flake falling is reduced, and thereby synergistically improving the fireproof performance.

The invention relates to a copper electrolyte purification and impurity removal method, wherein, the speed of arsenic antimonates being separated out from copper electrolytes is accelerated by control of the relative mass ratio of antimony / bismuth in anode coppers to be 0.8 to 8.0 percent, the concentration of arsenic in the copper electrolytes to be 4.0 grams per liter to 15 grams per liter, and the concentration ratio of arsenic (III) / arsenic (V) to be 0.01 to 0.15, and then the self purification and impurity removal capacity of the copper electrolytes is further improved; the volume of the electrolytes which are purified by adoption of the prior art for production of a ton of cathode coppers during the electrorefining process of the coppers is driven to be below 0.1m<3>; the impurity concentration in the electrolytes is maintained to be 50 to 250 milligrams per liter for antimony and 60 to 300 milligrams per liter for bismuth. The copper electrolyte purification and impurity removal method has the advantages of simple technology, simple and convenient operation, small reagent dosage, good purification effect, low production cost, no side effect on the main technology and so on.

The invention provides a soluble glass chemical modifying agent used for casting and a preparation method; the components of the invention comprise 0.1 to 1 percent of sodium carboxymethyl cellulose, 0.1 to 1 percent of polyethylene alkyl alcohol, 0.1 to 1 percent of polyacrylamide and 0.1 to 1 percent of dextrine of the relative mass of the sodium soluble glass. On the basis, the invention can also comprise 1 to 8 percent of dipotassium hydrogen phosphate, 0.1 to 1 percent of sodium dodecyl sulfate (or alkyl sodium sulfonate) or 1 to 6 percent of nano-meter montmorillonite. The preparation method includes: dissolving the organic components into water, heating and stirring, cooling to obtain a compound modifying agent; adding the compound modifying agent into the soluble glass according to a certain proportion, heating and stirring, cooling to obtain the organic modified soluble glass; adding the inorganic components into the organic modified soluble glass, stirring uniformly to obtain a chemical compound modifying soluble glass. Applying the organic modified soluble glass of the invention can enhance the mould strength and improve the sand collapsibility. The prepared modifying agent has the powerful market competitiveness and the value of application owing to the low manufacturing cost and the excellent performance.

The invention relates to a multi-object de-duplication method of real-time video, a terminal device and a storage medium. In the method, the multi-object de-duplication method comprises the followingsteps: S100, extracting pictures of each object in the picture according to a video frame picture at a current time; S200: obtaining corresponding structured information data according to pictures ofeach target: a target image feature vector, tracking information and an image quality score; S300: setting a set of structured information data of each target before the current time as a target set,carrying out Clustering according to the structured information data of the targets, and adding the structured information data of each target at the current time to the target set, so that the same target appears only once at different times in the target set, and the appearing target is the target with the best relative quality. The method realizes the output result of the target detection through clustering, and only one picture of the same object is output finally, which greatly reduces the redundancy of the system, reduces the error judgment rate of the detection in a certain range, and improves the robustness.

The present invention relates to a dry powder cubic gel precursor comprising an encapsulating compound, an amphiphile capable of forming a cubic liquid crystalline phase and optionally a solvent. Encapsulating compound (A), amphiphile (B) and optional solvent (C) exist in relative mass fractions, the relationship is 1.0=a+b+c, where a is the mass fraction of A and b is the mass of B Score, c is the quality score of C. In addition, 1.0>a>0, 1.0>b>0, 1.0>c>0, and a, b, and c are not in the cubic liquid crystal phase region on the phase diagram representing the phase behavior of A, B, and C.

An inorganic composite waterproof, fireproof and heat preservation material for buildings contains basic components of water, waterproof agents, perlite, porous ceramsites and cement, wherein the waterproof agents are colored waterproof agents with inorganic characteristics, the perlite is waterproof carbonized blind hole expanded perlite, the grain size of the perlite is 0.5-1mm, the volume weight of the perlite is 80-220 kg / m<3>, and the expansion times of the perlite is 8-15. Coal ash serves as the main raw material of the porous ceramsites, and the grain size of the porous ceramsites is 10-12mm. The cement is aluminium silicate cement added with modifying agents. According to material proportion, relative mass contents the of the perlite, the ceramsites, the cement and the waterproof agents meet requirements that the perlite occupies 59-61 parts, the ceramsites occupy 55-58 parts, the cement occupies 32-38 parts and the waterproof agents occupy 23-27 parts. The inorganic composite waterproof, fireproof and heat preservation material for buildings has the excellent performances in aspects of fire prevention and heat preservation, is high in indexes such as the heat conductivity coefficient, the dry appearance density, the material bonding strength and compression strength, and is low in cost.

The invention discloses a novel displacement sensor combination layout and high-reliability redundancy design method. The installation requirement of each displacement sensor is specified, each displacement sensor outputs relative displacement in one direction, and a combination of nine displacement sensors is subjected to layout and reliability improvement redundancy optimizing configuration design from multi-dimensional angles including the installation positions and the measurement directions; a relative position and relative attitude solving algorithm is constructed, high-precision measurement on the high-reliability three-axis relative position and relative attitude is achieved, and the decoupling control requirement on the relative mass center position and the relative attitude of two cabins of a double super satellite platform is met; and by analyzing the solving matrix ranks, the redundancy degrees of the displacement sensor combination are obtained, then the reliability of thecombination is calculated, and the system optimum design is continuously optimized and guided. Accordingly, high-precision measurement on the high-reliability three-axis relative position and relative attitude is achieved, and the decoupling control requirement on the relative mass center position and the relative attitude of two cabins of the double super satellite platform is met.

The invention aims to provide a gasoline selective desulfurization catalyst, and particularly relates to an FCC gasoline selective desulfurization catalyst. The catalyst is prepared by mixing a molecular sieve and a binder, forming the mixture to obtain a carrier and loading active metal ingredient and alkaline metal and / or rare-earth metal to the carrier, wherein the molecular sieve in the carrier is SAPO and / or APO molecular sieve; the binder is aluminum oxide or silicon dioxide; the active ingredient is cobalt-molybdenum composite metal and accounts for 6.5 to 20 weight percent of the catalyst, the alkaline metal and / or the rare-earth metal ingredient account(s) for 0.05 to 8.0 weight percent of the catalyst, and the balance is the carrier; and the relative mass ratio of the molecular sieve to the binder in the carrier is (5-9):(1-5). The catalyst has high hydrodesulfurization activity and selectivity and low olefin saturation ratio when gasoline with low sulfur content is produced by hydrodesulfurization of all fractions of catalytic gasoline, particularly heavy fractions.

The invention discloses biphase calcium phosphate (BCP) composite powder synthesized by a high-temperature solid phase reaction. BCP powder is biphase composite powder prepared from hydroxyapatite (HA) and beta-tricalcium phosphate (beta-TCP), in which the molar ratio Ca / P of calcium to phosphorus is 1.5 to 1.67, wherein the value ranges of the relative mass percent of HA and beta-TCP two phases are each 1 to 99 percent; the sizes of crystalline grains of the HA and beta-TCP two phases are 20nm to 300 microns; the crystallinity is 50 to 100 percent. The invention also discloses a preparation method of the BCP composite powder synthesized by the high-temperature solid phase reaction. The BCP composite powder is prepared through the high-temperature solid phase reaction of a calcium-containing solid compound and a calcium-phosphorus solid containing compound. The BCP composite powder has the advantages that a reaction period is short; the costs of raw materials are low; the equipment investment is low; no waste gas and waste water are discharged; further, the proportion of the HA and beta-TCP two phase in the BCP powder is easily regulated and controlled at the same time; the two phases are distributed uniformly; the sizes of the crystal grains and the crystallinity are controllable; finally; the production requirement that the compression strength of BCP biphase composite ceramic is improved or a degradation speed is regulated and controlled is met.

The present invention discloses multi-component gas mixtures adapted to provide condensed phase cryogenic refrigerants with normal boiling points below about 80° K. for cooling sensor device components. Exemplary gas mixtures generally include 19-40% Ar and 20.1-80.5% Ne. Open-loop Joule-Thomson systems in accordance with the present invention may be suitably adapted (with varying relative mass ratios of cryogenic gas mixtures) for cooling sensor devices to temperatures between 27° K. (100% Neon) and about 80° K. (0% Neon).

This invention provides a composition which comprises an admixture of three compounds, wherein: (a) one compound is an antibody which binds to a CCR5 receptor; (b) one compound retards attachment of HIV-1 to a CD4+ cell by retarding binding of HIV-1 gp120 envelope glycoprotein to CD4 on the surface of the CD4+ cell; and (c) one compound retards gp41 from adopting a conformation capable of mediating fusion of HIV-1 to a CD4+ cell by binding noncovalently to an epitope on a gp41 fusion intermediate; wherein the relative mass ratio of any two of the compounds in the admixture ranges from about 100:1 to about 1:100, the composition being effective to inhibit HIV-1 infection of the CD4+ cell. This invention also provides a method of inhibiting HIV-1 infection of a CD4+ cell which comprises contacting the CD4+ cell with an amount of the composition of the subject invention effective to inhibit HIV-1 infection of the CD4+ cell so as to thereby inhibit HIV-1 infection of the CD4+ cell.

The invention provides a positioning and assembly tool for an automobile rear cover. The positioning and assembly tool comprises a first outfit, a second outfit and a third outfit which are mutually independent, wherein the first outfit consists of a body and a plugging block fixed on the body, the shape of the bottom of the body of the first outfit accords with that of the top of a to-be-assembled automobile top cover, and a predetermined included angle is formed between the plugging block and the body of the first outfit; the second outfit consists of a body and a plugging block fixed on the body, the shape of the bottom of the body of the second outfit accords with that of the top of a to-be-assembled automobile side wall, and a predetermined included angle is formed between the plugging block and the body of the second outfit; and the third outfit consists of a body and a supporting block fixed on the body, the shape of the lateral surface of the body of the third outfit accords with that of the lateral surface of a taillight mounting plate of the to-be-assembled automobile side wall, the supporting block of the third outfit is arranged at the top of the body, and the body is provided with a fixed mechanism fixed with the taillight mounting plate of the to-be-assembled automobile side wall. The positioning and assembly tool has the advantages of simple structure, low relative mass, convenience for operation, low cost, reasonability in positioning and capability of ensuring the precision and the stability of rear cover assembly.

The invention discloses a continuum structure double-material topological optimization method for anisotropic materials. According to the method, according to the anisotropic materials and structure optimization problems of all the anisotropic materials, an isotropous entity structure double-material interpolation model of a penalty function is introduced into isotropous and anisotropic coexistingstructure topological optimization, and a stiffness matrix fusion thought is adopted to construct a material interpolation model of double-material topological optimization of an isotropous and anisotropic integrated continuous structure; and then a mobile asymptotic line optimization algorithm is adopted to perform iteration optimization to obtain double-material topological configuration of theisotropous and anisotropic integrated continuum structure under given design space with a relative mass fraction of the structure being constraint, minimum structure flexibility being a goal and unitrelative density being a design variable. Through the method, isotropous and anisotropic fusion is realized in the topological process, the influence of manual intervention in the structure optimization process is avoided, and the optimality of structure performance is ensured.

The invention relates to paint for casting titanium and titanium alloy as well as a preparation method thereof. The paint for casting the titanium and the titanium alloy comprises the following components, and the relative mass proportional relation of the components is as follows: the mass ratio of zirconium carbonate to refractory aggregate powder to surface active agent is 18-22: 75-80: 0.6-0.8; the refractory aggregate powder is zirconium dioxide or a mixture of zirconium dioxide and hafnium oxide; the surface active agent consists of sodium oxide, iron trioxide and silicon dioxide; the mass ratio of sodium oxide to iron trioxide to silicon dioxide in the surface active agent is 8-10: 1-2: 6-10. The paint has the advantages of simple components, stable performance, difficult gel appearance, long service life and low production cost.

A rubber mixture and a pneumatic vehicle tire including a rubber mixture containing the following constituents: 15 to 55 phr of at least one natural polyisoprene and / or 15 to 55 phr of at least one synthetic polyisoprene and 15 to 85 phr of at least one polybutadiene and 60 to 100 phr of at least one carbon black and 1 to 10 phr of at least one anti-ozone wax, wherein the anti-ozone wax contains unbranched hydrocarbons having the following chain length distribution including at least the three ranges A and B and C: range A: hydrocarbons having 26 to 31 carbon atoms, range B: hydrocarbons having 32 to 36 carbon atoms, range C: hydrocarbons having 37 to 47 carbon atoms, wherein the relative mass fractions of the ranges A to B to C are 0.7-1.5 to 0.6-1.4. The tire contains the rubber mixture at least in an outer component.

The invention discloses a vertical rotator dynamic balance detection system without an additional sensor, which is characterized by comprising the following steps: connecting a current sensor with a servo driver for a driving motor of a vertical rotator, inputting into an FIFO (first-in first-out) unit, buffering data, controlling the start of an FFT (fast fourier transform) processor by judging whether data is prepared or not, and converting the time domain signal into the frequency domain signal by the data through the FFT processor; and obtaining the corresponding amplitude-frequency characteristics and phase-frequency characteristics, wherein the amplitude-frequency characteristics reflect the relationship between the relative mass of the eccentric point and the vibration frequency, and the phase-frequency characteristics reflect the relationship between the relative position of the eccentric point and the vibration frequency, thus the dynamic balance state of the vertical rotator is obtained. The vertical rotator dynamic balance detection system without the additional sensor has the advantages of small error, convenience of installation and low cost, thereby being suitable for wide popularization.

Provided is a makeup cosmetic which has a good feeling of use, without showing tautness or stiffness as in the case of using a silicone-based resin film or an offensive odor as in the case of using polyisoprene, and exhibits a good effect of preventing color migration. This makeup cosmetic is characterized by comprising polyisobutylene having a relative mass of 30,000-100,000 and a volatile hydrocarbon oil. Also provided are a top coating agent, which can be appropriately applied on the aforesaid makeup cosmetic, imparts glossiness and shows little color migration or blurring, a makeup kit comprising the aforesaid makeup cosmetic and the top coating agent, and a makeup method using the makeup kit.

The invention discloses a piston assembly with a weight reducing structure, and relates to a piston of an automobile engine. According to the piston assembly with the weight reducing structure, the piston comprises a piston body and a sleeve, wherein the piston body is provided with an upper groove and a pin base, the sleeve is provided with a lower groove, and the piston body is sleeved with the sleeve in a connected manner. A pin hole in the pin base communicates with a pin hole in the sleeve, the upper groove communicates with the lower groove so that a cooling oil cavity can be formed, and lubrication is convenient. In addition, the piston with the structure further has the beneficial effects of being high in strength, small in relative mass, good in cooling effect and convenient to assemble, full floating connection is adopted, and relative abrasion is better reduced.

The invention relates to a method for detecting a relative mass correction factor of impurity derivative chromatogram response of a sample with not high purity. When derivative reaction is carried out, the total weight loss before and after derivatization of a substance is controlled within 0.1% by measures including condensation recovery; the relative error of each step is controlled within 0.1% in the labeled weighing and dilution step; namely, when a theoretical mass score is calculated, contribution of an added impurity sample derivative to the theoretical mass score of the impurity derivative as well as contribution of existing impurity derivative in the sample derivative to the theoretical mass score of the impurity derivative is taken into consideration, the area normalized appearance mass score, measured by a chromatogram, of the impurity derivative serves as the abscissa, a fit straight line is drawn, and the gradient of the fit straight line serves as the relative mass correction factor of chromatogram response of the derivative with known impurity, and thus, the relative mass correction factor of chromatogram response of the corresponding impurity derivative can be determined more accurately.

The invention provides a method (e.g., a computer algorithm) for calculating a number of particles in a LDL subfraction. The method features the steps of: 1) measuring an initial distribution of LDL particles (e.g., a relative mass distribution) from a blood sample; 2) processing the initial distribution of LDL particles with a mathematical model to determine a modified distribution of LDL particles (e.g., a relative particle distribution); 3) determining a total LDL particle number value from a blood sample; and 4) analyzing both the modified distribution of particles and the total LDL particle number value to calculate the particle number value in an LDL subfraction.

The invention discloses a GC-EI / MS (gas chromatography-electron impact ionization / mass spectrometry) analysis method for volatile components of Taiwan junipers, and relates to Taiwan junipers. After a Taiwan juniper sample is crushed into powder, aroma components are trapped by head-space solid phase micro-extraction technology, qualitative analysis is performed by GC-EI / MS, and relative mass fraction of the components is determined by an area normalization method. 31 volatile components of the Taiwan junipers are totally identified and have complicated and rich chemical components. Composition of volatile substances of the Taiwan junipers can be effectively analyzed by the method, a novel method is provided for analysis of the volatile components of the Taiwan junipers, and research and further development of the Taiwan junipers can be promoted.

The invention provides a gas chromatography online analyzing method and a device for a product of an ethylene reaction by biological ethanol dehydration. The method is to divide the product of the ethylene reaction by the biological ethanol dehydration into two paths, one path enters a product collection device; the other path enters a chromatographic column through carrier gas, wherein when the temperature is in a range of between 80 and 150 DEG C, ethylene, water, acetaldehyde, ethanol, ether and acetone are separated by the chromatographic column; and the separated components are introduced into a thermal conductivity cell detector, the contents of the ethylene, the water, the acetaldehyde, the ethanol, the ether, the acetone and other side products are detected at the temperature of between 200 and 250 DEG C. The method overcomes the defects that, in the conventional analyzing technology, the product generated after the biological ethanol dehydration has complicated operation and large labor intensity, the reacting status cannot be observed in time and the like. The response values of the components to be detected can be close in the chromatographic condition, and relative mass percentages of the components are approximate to the mass percentages of the components by using the area normalization method, so the qualitative measurement on the ethylene, the water, the acetaldehyde, the ethanol, the ether and the acetone can be completed in one time, the method can be used for automatic online analysis of the ethylene reaction by the biological ethanol dehydration.

The present invention discloses slight smoke type tricolor fireworks powder particles and application. The fireworks powder particles are obtained by the following steps: dissolving nitrocotton and a smokeless powder with the nitrocotton at first; emulsifying, foaming and prilling; then removing a solvent and separating materials; and finally drying to obtaining the fireworks powder particles. The obtained particles are mixed according to the relative mass ratio of (1-8): (1-8): (1-8) to obtain colorful fireworks powder. According to the slight smoke type tricolor fireworks powder particles and the application provided by the present invention, a color addition principle is utilized; the slight smoke type tricolor fireworks powder particles are mixed to match colors; the circumstance that a formula is designed independently according to various colors can be avoided; and only three basic powder particles are required to be produced. The three raw material powders are combined to achieve the colorful effect, the preparation process can be simplified, the product quality is stabilized, the production efficiency is greatly improved, and the production links are simplified.

The invention provides a battleship protective tank based on pressure relief and subdivision functions, including a tank body surrounded by a tank front plate, a tank rear plate and a tank side plate,wherein the tank body is provided with a tubular subdivision structure with a regular hexagonal section, the adjacent subdivision structure is closely connected so that the section is honeycomb, andthe side wall surface of the subdivision structure is perpendicular to the tank side plate and closely spread over the whole tank body; an empty tank with no liquid is arranged in the middle of everysix circumferentially connected subdivision structures; Other subdivision structures are filled with liquids, that is, liquid subdivision. The invention adopts the honeycomb type subdivision structure, which can absorb more energy generated by explosion while reducing the relative mass, enhance the structural strength, enhance the protective capacity of the liquid tank and protect the important compartment of the warship from being destroyed. Each subdivision structure is independent of each other and can be protected against second or even multiple strikes. Empty cabin plays the role of pressure relief and expansion reduction, which can make the liquid swollen after being hit by high-speed fragments immersed, alleviate the expansion of liquid damage, and protect other cabins.

The invention relates to a stamping die rubber spring. The stamping die rubber spring is characterized by comprising raw rubber, a vulcanizing agent, a filling reinforcing agent, a plasticizer, an anti-aging agent and additives. In terms of relative mass parts, the dosage of the raw rubber NBR is 100 parts; the dosage of stearic acid is 5-20 parts; the dosage of peroxide is 5-20 parts; the dosage of carbon black is 5-100 parts, and the balance additives. According to the claim 1, the stamping die rubber spring is characterized in that: the plasticizer is dibutoxyethoxyethyl ester adipate, i.e. TP-95 plasticizer. With the stamping die rubber spring provided by the invention, the safety and reliability of rubber seal can be improved, the corresponding replacement cost is reduced, and the service life of parts can be greatly prolonged.

The invention discloses arkshell essential oil and a preparation method thereof. The arkshell essential oil is derived from a medicinal fungus Earliella scabrosa(Pers.)Gilb.&Ryvarden. The arkshell essential oil product is obtained by carrying out vacuum rotary steam distillation on an Earliella scabrosa(Pers.)Gilb.&Ryvarden fruiting body, extracting distillate with organic solvents, such as diethyl ether, and recovering diethyl ether after drying a diethyl ether extract. Through gas chromatography-mass spectrometry analysis and identification, the arkshell essential oil contains 35 components, wherein the sum of the relative mass percentages of six components with the highest contents is 70-90%. In the invention, the main components in the Earliella scabrosa(Pers.)Gilb.&Ryvarden fruiting body essential oil are made clear for the first time and the essential oil is found to have unique aroma components and is new essence and flavor. The preparation method is simple, convenient and practical, can avoid coking of the raw materials due to heating and can achieve the effects of shortening the extraction time and increasing the essential oil extraction rate.

A method and device for the determination of the mass and / or the mass proportion of a wall section of a plastic bottle, in particular a section in the vicinity of the bottle shoulder and / or of the bottle neck, where, due to the fact that a relative mass distribution of the side wall is calculated from a distribution of the light transmission through the side wall of the bottle, the mass proportion of the wall section to be determined of the mass of the side wall can be determined with slight error based on the mass distribution even without calculation of the absolute mass values.