190results about How to "Improve decomposition effect" patented technology

The invention relates to a compound microbial agent which comprises compound bacteria for decomposing kitchen wastes and auxiliary materials for solid fermentation, wherein the compound bacteria comprise 10-15 parts of cellulose degradation bacteria, 15-30 parts of starch degradation bacteria, 15-20 parts of protein degradation bacteria, 15-20 parts of grease degradation bacteria, 10-15 parts of bacillus subtilis and 5-15 parts of pseudomonas aeruginosa; the auxiliary materials comprise 50-60 kg of wheat bran, 15-20 kg of bean pulp, 0.4-0.6 kg of magnesium sulfate, 0.4-0.6 kg of potassium dihydrogen phosphate, 0.1-0.2 kg of disodium hydrogen phosphate and 8-10 kg of glucose. The inoculation amount of the compound bacteria in the auxiliary materials is 0.8%-1%, and the compound bacteria is subjected to solid fermentation to obtain the compound microbial agent. The compound microbial agent has a good decomposing effect on greases, proteins and fiber substances and can be tolerant to salt with a certain concentration; optimally, the degradation rate can reach more than 90%.

The invention discloses a method for preparing earthworm cultivation substratum. By mixing livestock dung and edible fungus residue without foreign matters to carry out anaerobic fermentation, the method obtains the substratum for cultivating and reproducing earthworms, the livestock dung is pig dung or cow dung or the mixture of pig dung and cow dung, and the edible fungus residue is residue which is left over in the growth of cultured saprophytic lignicolous fungi or coprophilous fungi. Since the method utilizes the livestock dung and the edible fungus residue as the cultivation substratum to raise the earthworms, the method not only solves the problem of dung accumulation and waste and prevents environment pollution, but also increases the cultivation scale and growth quality of the earthworms by adding the edible fungus residue, thus effectively increasing the output of the earthworms.

The invention relates to a composite microbial inoculant and its preparation method, and overcomes the problems of slow decomposing agent start and incomplete decomposition in the prior art. The invention provides a straw decomposing agent for quick start of decomposition at low temperature, and the straw decomposing agent comprises a strain YO-H, bacillus subtilis, Saccharomyces cerevisiae, Aspergillus niger and Trichoderma harzianum. The straw decomposing agent provided by the invention has the advantages that: 1. it employs the strain YO-H, and can quickly start decomposition under the condition of a low environmental temperature; 2. the strain YO-H cooperates with other decomposing fungi to achieve a better decomposing effect; and 3. an additional enzyme preparation is added to improve the cellulose activity of the decomposing agent, about 3-4 days are left before mass propagation of decomposing fungi and generation of new enzyme, and during the period, the additionally added enzyme preparation is employed to degrade lignin and cellulose, that is to say the decomposition time is 3-4 days ahead of schedule.

The invention discloses a preparation method and an application of a metal organic framework material loaded with a Schiff base complex. Salen is formed by introducing salicylic aldehyde onto an amino functionalization metal organic framework material, then, Salen and transition metal ions form a complex, the metal organic framework material loaded with the Schiff base complex is prepared, and the material is applied to a cyclohexyl hydroperoxide decomposition reaction. The prepared catalyst is high in catalytic performance, the catalytic activity of the catalyst is basically not reduced after being recycled repeatedly, the catalyst is stable in performance and is applied to catalysis of the cyclohexyl hydroperoxide decomposition reaction, the decomposition conversion rate can reach 97%, the total selectivity of alcohol ketone can reach 99.8%, the good decomposition effect can be obtained without alkaline liquor, the environmental problem caused by the waste liquor is effectively avoided, the environmental pollution is significantly reduced, and meanwhile, the proportion of cyclohexanol to cyclohexanone is significantly increased.

The invention discloses a crop straw decomposition agent. The crop straw decomposition agent is composed of the following components by mass percent: 20%-30% of bacillus subtilis, 20%-30% of aspergillus niger, 10%-15% of candida utilis, 15%-20% of trichoderma viride, 10%-15% of aspergillus oryzae and 1%-2% of cellulase. In order to solve the problems such that current straws are directly returned to fields, and the temperature rise is slow, the decomposition is slow and the decomposition effect is poor when the straws are used for composting an organic fertilizer, crop straw decomposition is tested for a plurality of years, microorganism strains and biological enzyme preparations are continuously screened, and finally, the bacillus subtilis, the aspergillus niger, the candida utilis, the trichoderma viride, the aspergillus oryzae and the cellulase are prepared into the crop straw decomposition agent according to the scheme. The four fungi are not antagonistic and combined with the cellulase to have a synergistic interaction effect and the straws can be rapidly decomposed.

The invention discloses a high-voltage power equipment partial discharge feature extraction method and apparatus. According to the method, after sample signals of partial discharge of high-voltage power equipment are obtained, multiple modal components of the sample signals are obtained by performing VMD on the sample signals. Accordingly, effective modal components are obtained by performing denoising on the modal components on the basis of an ICA algorithm and a threshold denoising method, and features of the partial discharge are represented by use of the feature quantity PMSE of the effective modal components. The VMD can help to realize adaptive decomposition of signals, such disadvantages of modal mixing and sampling frequency influences and the like do not exist, components of close frequencies can be well distinguished and separated, the noise robustness is better, an optimal decomposition effect can be realized, and the precision of feature extraction of partial discharge signals is improved.

The invention discloses a method for ecologically restoring polluted water by applying a compound microorganism technology. A compound microorganism thallus concentrated solution consists of the following 10 thalluses in parts by weight: 5 to 15 parts serratia, 5 to 15 parts of photosynthetic bacteria, 5 to 15 parts of yeast cell, 5 to 15 parts of denitrifying bacteria, 5 to 15 parts of lactic acid bacteria, 5 to 15 parts of actinomycetes, 5 to 15 parts of BD bacteria, 5 to 15 parts of nitrogen-fixing bacteria, 5 to 15 parts of nitrifying bacteria and 5 to 15 parts of bacillus subtilis, wherein the total bacterial count in the compound microorganism thallus concentrated solution is not less than 109 pic/ml. According to the invention, the treating process is environment-friendly, healthful and safe, undesirable odor such as hydrogen sulfide and ammonia nitrogen is not easy to generate, the transparency of the restored water is more than 1.5 m, and the removal ratio on algae, total nitrogen, total phosphorus and COD is 95-99%, 95-99% , 90-95% and 90-95% respectively.

The invention relates to a short-term wind power forecasting method based on a hybrid algorithm, which includes the following steps: S1 decomposing the original wind power into a series of intrinsic mode function (IMF) sub-modal components by using the integrated empirical mode decomposition technique, S2 extracting the main trend components of IMF and RES components except the first IMF componentIMF1 decomposed by the integrated empirical mode decomposition (IMD) technique by using the singular spectrum analysis (SSA) method to obtain more obvious sub-modal components, S3 preserving IMF1 andR, and decomposing IMF1 and R into a series of stationary sub-modal components by wavelet packet decomposition. S4 making use of on-line robust limit learning machine to to establish a prediction model for all the sub-modes obtained in the step S1-S3,, and obtaining a final wind power prediction result by superposing the sub-modes; The invention can effectively and accurately predict the actual wind power system, and provides an important reference for the operation and planning of the electric power system.

The invention belongs to the field of crop straw utilization and discloses a method of accelerating decomposition of maize straw retention. The method comprises the following steps: crushing maize straws; mixing with an assistant; inoculating a straw degrading bacterial agent; burying the straws in soil; controlling the water content of the soil to 60-80% of field water retention; and decomposing at 20-30 DEG C. Pot experiments verify that the method provided by the invention has the best decomposing effect on maize straws and the degradation rate of the straws reaches 51.9% which is improved by 14% compared with that of direct retention of the straws. The TR assistant can remarkably accelerate the straw degrading bacterial agent to generate cellulose, and the filter paper enzyme (FPA), the cellulase activity (CMCase) and the activity of hemicellulase (Xylanase) are greatly enhanced, so that the straws are directly promoted to decompose. The method disclosed by the invention promotes decomposition of maize straws and accelerates the retention process of the maize straws, can be used for conversion and utilization of straw wastes and has a wide application prospect.

The invention relates to compound microbial decomposed inoculas, and a preparation method and an application thereof. Effective components of the involved compound microbial decomposing inocula comprise bacillus amyloliquefaciens Ba168, paenibacillus peoriae BC-39, trichoderma harzianum, candida krusei, aspergillus niger and streptomyces griseus. The preparation method comprises that each strain are fermented separately, and the strains are mixed for use according to the proportion after the completion of the fermentation. The involved application is an application of the compound microbial decomposing inocula in degradation of crop straw. The compound microbial decomposing inocula not only give full play to unique degradation function of the bacillus on the straw, are combined with microbial compound flora for efficient synergy in the straw degradation process, thereby efficiently and rapidly degrading the straw, and significantly enhancing soil organic matter and humus levels.

The invention relates to an organic fertilizer with the effect of controlling crop diseases and pests and a production method or the organic fertilizer. The organic fertilizer is prepared from the following raw materials in parts by weight: 25-30 parts of leaves of shrubby baeckea, 18-22 parts of cigarette powder, 10-15 parts of tea bran, 3-5 parts of derris trifoliata herbs or roots, 20-25 parts of filter mud of sugarcane, 3-7 parts of quicklime powder, 15-25 parts of yeast liquid, 0.4-0.7 part of a bacillus subtilis preparation and 0.4-0.7 part of a bacillus mucilaginosus preparation. The organic fertilizer with the effect of controlling crop diseases and pests produced by the method has various functions of controlling insects, controlling diseases, promoting growth, regulating, improving stress resistance of crops, increasing sugar agricultural products, improving soil and the like for crop planting. By applying the organic fertilizer, soil pests can be controlled, soil-borne diseases are prevented, nutrients can be balanced, soil environment is improved, crop growth is promoted, crop yield and quality are improved, and the purpose of increasing both production and income is achieved.

The invention provides an additive for accelerating crop straws to efficiently maturate and an application thereof. The weight of the straws is used as the reference; the weight of EM (Effective Microorganisms) fungus raw liquid accounts for 2% of the weight of straws; the weight of urea accounts for 0.75-2.1% of the weight of the straws; and the weight of FeSO4 accounts for 1-5% of the weight of the straws. According to the application of the additive for accelerating the crop straws to efficiently maturate, peanuts or rice straws are used as raw materials; EM fungus is selected as a fungicide for testing; the FeSO4 with different levels can be respectively added, so that the acceleration effect on the straw efficient maturation by the FeSO4 with the different levels can be researched in a constant-temperature and ventilation culture condition; and finally, a compost additive product is formed by properly proportioning the fungicide, the urea and a chemical matter FeSO4. The additive for accelerating the crop straws to efficiently maturate, provided by the invention, provides a suitable additive and suitable addition volume for an aerobic compost of the straws, so as to improve the circulation utilization of straw resources.

The invention provides a liquid straw decomposition agent, and contains main active microbes as follows: Bacillus amyloliquefaciens and Saccharomyces cerevisiae, and the two active microbes are mutually cooperated without antagonistic action, wherein, the effective bacteria number is 2-5 hundred million/ml, the number of effective live bacteria accounts for 50-60% of the number of Bacillus amyloliquefaciens, and the number of effective live bacteria accounts for 40-50% of the number of Saccharomyces cerevisiae. The Bacillus amyloliquefaciens and Saccharomyces cerevisiae are treated by the following steps: (1) test tube bacterial strain slang culture; (2) shake flask and activation culture; (3) first grade seeding tank fermentation; (4) fermentation tank fermentation; the fermentation liquors of Bacillus amyloliquefaciens and Saccharomyces cerevisiae are obtained, and the fermentation liquors are mixed and compounded according to the volume ratio, and the liquid straw decomposition agent is obtained, wherein, the Bacillus amyloliquefaciens fermentation liquor accounts for 50-60% and the Saccharomyces cerevisiae fermentation liquor accounts for 40-50%. The liquid straw decomposition agent provided by the invention is suitable for rapid decomposition of wheat, paddy rice and other crop straw.

The invention relates to a method for constructing a composite bacteria system for decaying maize straws, which belongs to the technical field of a microorganism screening method. The method for constructing the composite bacteria system for decaying the maize straws comprises the following steps of: (1) performing enrichment culture on bacteria; (2) preparing a solid culture medium; (3) performing inducing culture of nutrient limitation; (4) performing inducing culture of gradient temperature reduction; and (5) performing successive transfer culture to obtain the composite bacteria system CSS-1 for decaying the maize straws. The composite bacteria system screened by the method comprises bacteria, fungus and actinomycetes. The method has the advantages that: the composite bacteria system which comprises the bacteria, the fungus and the actinomycetes is obtained by screening under the condition of the solid culture medium; and the decaying effect is good.

The invention relates to a straw turnover method which comprises a step of thoroughly composting straws by utilizing microorganism agents, wherein the microorganism agents comprise bacillus subtilis KX-1 with the collection number of CCTCC NoM208057, actinomycetes, bacillus subtilis KX-2 with the collection number of CCTCC NoM208058, and bacillus subtilis KX-4 with the collection number of CCTCC NoM208060. According to the invention, high-activity low temperature strains capable of reproducing at a low temperature serve as induction bacteria for driving the other bacterial agents to reproduce at a high speed, so that the microorganism agents can be fermented at a high temperature or a low temperature, are not limited by regions or seasons and can be used in the four seasons. The microorganism agents can be used for straw turnover, so that the straws can be treated in near fields by peasants, straw turnover is realized on the spot, plant ash organic fertilizers are formed, straw turnover is performed in a harmless fertilizer form, beneficial microorganisms in soil are added, and the fertility of the soil is improved.

The invention relates to a low-temperature beneficial microorganism preparation product applied to straw application. The low-temperature beneficial microorganism preparation product comprises a microbial agent, a volcanic biological agent and amino acid particles, wherein the microbial agent comprises a plurality of beneficial microorganisms using bacillus subtilis KX-1, bacillus subtilis KX-2, bacillus subtilis KX-4 and actinomycetes as the main bodies; the volcanic biological agent comprises a volcanic particle carrier and a microbial agent implanted into the volcanic particle carrier. The low-temperature beneficial microorganism preparation product has the advantages that the product uses low-temperature bacteria as the induction bacteria, is high in activity, capable of reproducing under a low-temperature condition and driving the high-speed reproduction of other microbial agents, capable of achieving both high-temperature fermentation and low-temperature fermentation, unlimited by regions and seasons and capable of being used in four seasons; the product is applicable to straw application, farmers can perform straw application right in the field, plant ash organic fertilizer can be formed, straw application in a harmless fertilizer form is achieved, beneficial microorganisms in soil are increased, and the fertility of the soil is increased.

The invention discloses a bending machine die for a nine-bend workpiece and a machining method of the nine-bend workpiece, and belongs to the field of dies and bending. The bending machine die comprises a lower die body and upper die bodies, and the upper die bodies comprises a first upper die body, a second upper die body, a third upper die body and a fourth upper die body. The first slope of the second upper die body, the second vertical face of the second upper die body and the second slope of the second upper die body form a groove, and the first slope of the third upper die body, the third vertical face of the third upper die body and the second slope of the third upper die body form a groove. When the bending machine die is used for machining the nine-bend workpiece, stability is good, reasonable avoidance in workpiece machining is achieved, the four upper die bodies and the lower die body are only needed for machining the complex workpiece, and machining cost is low; the machining method of the workpiece is the simplest, the bending sequence is reasonably set, the bending angle of special portions is ingeniously set, the workpiece can be machined within the shortest period, and machining efficiency is high.

The invention discloses an organic fertilizer fermentation inoculant and application. The inoculant is composed of a primary fermentation inoculant body and a secondary fermentation inoculant body. The primary fermentation inoculant body comprises bacillus subtilis, bacillus licheniformis, trichoderma viride, aspergillus oryzae, pseudomonas, trichoderma koningii, geotrichum candidum, long spiny shells, ascomycetes, thermomyces lanuginosus and thermobifida fusca. The secondary fermentation inoculant body comprises halophilic bacteria, alkalophilic bacteria, azotobacter chroococcum, bacillus megatherium, streptomyces griseus, bacillus thuringiensis, brevibacillus laterosporus and bacillus mucilaginosus. Time for fermenting organic fertilizer with cow dung as the raw material can be effectively shortened, and diseases and insect pests in the fertilizer can be eliminated. Meanwhile, alkalophilic bacteria and bacillus thuringiensis are added so that the fermentation inoculant can adapt to saline-alkali soil and can prevent diseases and insect pests of plants, and the prepared organic fertilizer can improve the soil structure, reduces the salt content and the pH value in soil, improves soil fertility and is particularly beneficial to improvement of saline-alkali soil.

The invention relates to a desulfuration waste liquid treatment process, in particular to a desulfuration waste liquid treatment process and equipment thereof. The desulfuration waste liquid is treated by adopting a heating hydrolysis mode in the process, namely the desulfuration waste liquid is conveyed into a closed hydrolysis reactor, cyanide in the desulfuration waste liquid is hydrolyzed into non-toxic or low-toxic compounds such as formate, ammonia and the like at a certain temperature under a certain pressure, and the hydrolyzed products are directly conveyed to an ammonia still. The process has the advantages that: due to primary treatment of the desulfuration waste liquid before evaporating the ammonia, the cyanide content of the desulfuration waste liquid is effectively reduced, and the cyanide content of the ammonia evaporation wastewater after the desulfuration waste liquid is blended is close to the index before the desulfuration waste liquid is not blended; and the wastewater is discharged after biochemical secondary treatment so that the water quality meets the national discharge standard requirement.

The invention relates to a thorough decomposition agent for locally returning straw to fields, and a preparation method of the thorough decomposition agent, and belongs to the technical field of thorough decomposition agents for straw. The thorough decomposition agent disclosed by the invention has the characteristics of being high in decomposition and disintegration efficiency and short in degradation time, and particularly has favorable disintegration effects at normal temperature and even low temperature. The thorough decomposition agent for locally returning straw to fields, disclosed by the invention, is prepared through the steps of performing fermentation with bacillus amyloliquefaciens, aspergillus niger, trichoderma longibrachiatum and saccharomyces cerevisiae respectively to obtain fermentation liquid, and mixing the fermentation liquid, wherein the ratio of the unit number of colonies of bacillus amyloliquefaciens agent fermentation liquid to the unit number of colonies of aspergillus niger agent fermentation liquid to the unit number of colonies of trichoderma longibrachiatum agent fermentation liquid to the unit number of colonies of saccharomyces cerevisiae fermentation liquid is 2:3:3:1. The thorough decomposition agent for locally returning straw to fields, obtained by the preparation method disclosed by the invention can promote rapid thorough decomposition ofthe straw and enable the thoroughly decomposed straw to return to the fields, can supplement soil organic matter, can sufficiently release and utilize nitrogen, phosphorus and potassium nutrients in the straw, and besides, can improve soil microorganism environment.

The invention provides a non-intrusive load decomposition and monitoring method based on a differential information input strategy and a deep neural network method. The load decomposition method comprises the following steps: an obtaining step: obtaining the total real-time power X of each electric appliance on a total table, and obtaining the real-time power Y of a target electric appliance at the corresponding time; a difference step: calculating difference information of the total real-time power X on the total table to obtain a real-time power change sequence Xd; a sample set forming step: taking the power change sequence Xd as input, taking the real-time power Y of the target electric appliance at the corresponding moment as output, obtaining a plurality of sample pairs, and forming a training sample set; and an analysis step: training by adopting the training sample set to complete the analysis model. The method has the characteristics of high accuracy, small neural network scale and strong generalization capability, and can overcome the problem of high sampling frequency requirements of other methods.

The invention discloses a high-quality integrated biochemical garbage treatment machine. The high-quality integrated biochemical garbage treatment machine comprises a workbench, a garbage back-flushing treatment box and a garbage crusher, wherein the garbage back-flushing treatment box and the garbage crusher are positioned inside the workbench; the garbage crusher comprises a hollow grinding cavity and a grinding cutter; the grinding cutter is coaxially mounted in a grinding chamber in a clearance fit manner and comprises a cutter disk, a cutter block, a scraper plate and a coupling sleeve; one end of the cutter block is aligned with the radial edge of the cutter disk, and the other end of the cutter block extends to a central hole; the scraper plate is further arranged on the lower end surface of the cutter disk; one end of the scraper plate is connected with the coupling sleeve, and the other end of the scraper plate is aligned with the radial edge of the cutter disk; the garbage back-flushing treatment box comprises a sewage collecting box, a strain injection mechanism, a three-phase motor, a back-flushing pipe, a sewage draining pipe, a filter pipe and a liquid back-flushing mechanism; the filter pipe and the liquid back-flushing mechanism are positioned inside the sewage collecting box; the filter pipe is driven by the three-phase motor; a garbage inlet and a strain inlet leading to the end part of the filter pipe are formed in the wall plate of the sewage collecting box; the strain inlet is externally connected with the strain injection mechanism; the liquid back-flushing mechanism is positioned below the filter pipe and is connected to the filter pipe through the back-flushing pipe.

The invention provides a method for promoting high efficiency decomposition of enteromorpha powder by using enzymatically hydrolyzed sea-tangle residues and application of a product. According to the invention, dried enteromorpha powder is used as a raw material; a solid microbial inoculum is selected; enzymatically hydrolyzed sea-tangle residues of different levels are added; promotion effects of different addition amounts of the enzymatically hydrolyzed sea-tangle residues of different levels on high efficiency decomposition of enteromorpha powder are researched under same culture conditions; an appropriate additive for aerobic composting of enteromorpha powder is provided so as to improve the utilization rate of enteromorpha powder. The method provided by the invention enables decomposition time to be shortened by 1/3, allows the content of organic matters and the content of humic acid to be increased by 2 to 3 times, respectively, greatly improves a decomposition effect and decomposition efficiency and creates conditions for application of a decomposition product in a fertilizer.

The invention discloses a bearing fault diagnosis method based on parameter optimization VMD and a weighted Nick index; the method comprises the steps: collecting a full-life-cycle vibration signal of a bearing from a healthy state to a damaged state, and obtaining a vibration acceleration signal; initializing parameters of variational mode decomposition and a carnivorous plant optimization algorithm, and calculating a fitness function value; according to the fitness function value, optimizing a variational mode decomposition algorithm by adopting a carnivorous plant optimization algorithm to acquire a VMD parameter combination with the optimal vibration acceleration signal decomposition effect; and carrying out variational mode decomposition by using the VMD parameter combination with the optimal vibration acceleration signal decomposition effect, calculating an envelope kurtosis value, carrying out envelope demodulation analysis on a mode component with the maximum envelope kurtosis value, and then judging a bearing fault type. The method can accurately and efficiently extract weak features of the rolling bearing fault signal under strong and complex background noise, provides a theoretical method for avoiding major accidents, economic losses and the like caused by bearing faults, and has important reference value.

The invention relates to a fertilizer preparation method, in particular to a method of utilizing waste liquid and waste residue of corn pulping to prepare fertilizer, and aims to solve the problem that existing methods of using corn straw as a raw material for composting are long in composting time and bad for storage and utilization of nutrition. The method includes: step 1, feeding corn straw into a smasher after feeding the corn straw into a high-speed vibration screen to enable a material to be in a suspended or half-suspended state; step 2, at normal pressure, soaking corn straw skin in soaking liquid, extruding out low-concentration waste liquid through an extruder after soaking, and collecting the low-concentration waste liquid; step 3, using a two-roller mill to mill the corn straw skin raw material after being soaked, feeding size after milling and separating through the two-roller mill into a high-concentration pulping machine, extruding out high-concentration waste liquid through the extruder after pulping, and collecting the high-concentration waste liquid; step 4, concentrating the low-concentration waste liquid, and mixing the same with the high-concentration waste liquid and waste residue obtained in the step 1 for composting; step 5, discharging, packaging or mixing with sterilized clay for granulation to complete. The method is used for preparing the fertilizer.

The invention relates to the technical field of polluted soil restoration and particularly relates to an in-situ chemical restoration method for soil. Currently, aiming at the pollution of farmland soil, measurements such as burning and solidifying are mainly adopted abroad. According to the in-situ chemical restoration method, chlorine dioxide is used for decomposing organic pollutants. The method comprises the following steps: (1) calculating the volume of pollution according to the area and depth of a polluted region and measuring the varieties and contents of pollutants; (2) sampling the polluted soil and performing laboratory experiments to determine the consumption amount of chlorine dioxide per polluted soil unit; (3) enabling the amount of chlorine dioxide to deliver to be equal to the consumption amount of chlorine dioxide of X units of polluted oil of polluted volume; (4) preparing a mother solution with chlorine dioxide powder; (5) uniformly mixing the mother solution and irrigating water and irrigating the polluted farmland, wherein the concentration of the mixture is 60-80mg/L and the concentration of treated polluted water body is 1.6-1.8mg/L. The in-situ chemical restoration method is easy to operate, low in construction cost, labor-saving and time-saving and does not affect the soil fertility.