52 results about "Blue stain" patented technology

The invention relates to a toner and a toning method of bamboo or wood, in particular to a decoloring agent for decoloring bamboo or wood and a method for decoloring bamboo or wood. The decoloring agent comprises the following components in parts by weight: 3-10 parts of oxydol of which the weight concentration is 30-50%, 0.25-1 part of water glass, 0.1-1 part of non-ionic surface active agent and 0.25-0.5 part of alkaline pH-value regulator. The invention also provides a decoloring method by using the decoloring agent. The decoloring agent and the decoloring method in the invention not only can decolor the surface of a single plate or bamboo sheet, but also can completely decolor the single plate or bamboo sheet, i.e. the surface of the single plate or bamboo sheet and blue stains, mouldy stains, insect stains, black spots and the like at the center can be decolored; the invention has the advantages of uniform decoloring, high decoloring efficiency and low cost, and is suitable for mass cyclic production; the decoloring agent and the decoloring method have low destroy degree on wood and are especially suitable for use after the reprocessing or retoning after recombined decorativematerials are processed in a single plate or bamboo sheet decoloring way.

The invention relates to a rubber wood impregnation treatment method, and belongs to the technical field of wood treatments, wherein a rubber wood impregnation treatment method is specifically designed. The method comprises: adopting a sodium chloride solution with a saturated concentration to carry out a soaking treatment on freshly-sawn rubber wood, and then carrying out a subsequent conventional drying treatment, wherein the surface of the rubber wood is immersed by the sodium chloride solution, and the solution maintains the saturated state during the soaking process. The treatment method has the following characteristics that: the treatment agent of the present invention is toxic and harmless, raw material cost is low, a process is simple, the existing mature traditional process can be used, production investment is low, and the treated wood has characteristics of no infesting, no mildewing, no blue stain, and no rot.

The invention provides a combined bleaching agent for timber. The combined bleaching agent comprises the following main components in weight ratio per 1000 ml of solution : 15-75 g of sodium percarbonate; 5-30 g of sodium perborate; 2-8 g of sodium thiosulfate and 12-50 g of sodium sulfate. The combined bleaching agent provided by the invention has higher use security and good bleaching performance; with the adoption of the bleaching agent, dark spots, mineral lines, blue stain and the like on the timber surface and the phenomena that the timber color is uneven caused by various pollutions can be eliminated, and the color difference of heartwood can be eliminated; the overall timber color can be diluted, so that the timber surface can become white and bright and uniform in color and luster; and moreover, the original timber texture and quality can be maintained, particularly the blue-green heartwood of North American liriodendron wood can be repaired better; the bleached timber is in light yellow color, which is very attractive. The processing method further can be used for reducing the white degree reducing trend caused by phototropy, so that the light resistance performance of the timber surface can become more ideal.

Methods are provided for detecting compression wood, blue stain, or pitch in lumber. A light beam is projected towards the wood sample. Line or area cameras acquire images of light that is reflected from the wood sample. Based on the intensity of the reflected light at one or more locations on the wood sample, compression wood, blue stain, or pitch may be detected.

Methods are provided for detecting compression wood, blue stain, or pitch in lumber. A light beam is projected towards the wood sample. Line or area cameras acquire images of light that is reflected from the wood sample. Based on the intensity of the reflected light at one or more locations on the wood sample, compression wood, blue stain, or pitch may be detected.

Fibrous cellulosic products incorporating both conventional cellulosic fibers and laterally expanded cellulose fibers exhibit exceptional porosity, bulk, absorbency and resiliency properties. Typical products include absorbent tissue products, absorbent fluff products and flat papers. The laterally expanded cellulose fibers exhibit: (i) a broadened X-Ray diffraction peak for the most prominent reflection having a width at half-height, (W_1/2h)_A, of at least about 3.0° 2Θ, (ii) broad overlapping maxima in their Raman spectrum between 285 and 500 cm⁻¹, the height of the two tallest of said maxima in said spectrum between 285 and 500 cm⁻¹ being between 35 and 50% of the height of the peak near 1098 cm⁻¹ and (iii) a blue stain when treated with Graff C-stain, the stain exhibiting less red than the stains exhibited with bleached hardwood kraft fibers and bleached softwood kraft fibers.

The invention provides a method for processing blue-stain wood. The method is characterized by comprising the following step of heating the blue-stain wood for 1-10 hours at the temperature of 190-230 DEG C under the atmosphere of protective gas with oxygen content being less than 3 percent by volume, wherein the water content of the blue-stain wood is 8-13 percent by weight. When the method is used for processing the blue-stain wood, the colour of the blue-stain wood and the color of non-blue-stain wood are uniform without differences by visual measurement, and therefore, the appearance quality of the blue-stain wood is greatly improved. In addition, the blue-stain wood is basically consistent with the non-blue-stain wood because of density and intensity changes after heat processing, therefore, the processed blue-stain wood can play the role of the non-blue-stain wood, the wood is transformed to a top grade from a low grade, and the application prospects and the market value of the blue-stain wood are greatly increased. The invention belongs to a wood processing technique with great prospects.

Treatment process of wood and lignocellulosic materials with an aqueous liquid that contains alkaline oxalate and benzoate, which, in contact with humid or dry wood, avoids the formation of the blue stain and stains of other colors produced by fungi. This way it avoids the strong devaluation of the stained wood and has advantages on compounds used for that aim at the present time

The invention discloses a field separation method for tomicus piniperda-associated bacteria. The method comprises the following steps: determining a tomicus piniperda invasion hole on a suffered pine tree in a forest, peeling off the surface bark of the mother gallery of tomicus piniperda pests along the direction of the mother gallery of the tomicus piniperda pests by taking the invasion hole as an origin, so as to expose the phloem tissues of the eaten mother gallery of the tomicus piniperda, if larvae galleries are already formed at the both sides of the mother gallery, exposing the larvae galleries, inspecting and confirming whether the spores, hyphae, perithecia and blue-stain phloem tissues of tomicus piniperda-associated bacteria exist in the various eaten galleries of the tomicus piniperda, and adopting corresponding separation measures for the tomicus piniperda-associated bacteria according to the growth and development progresses and the blue-stain phloem tissue conditions of the tomicus piniperda-associated bacteria. The method disclosed by the invention integrates field sampling with laboratory strain separation, and is simple in steps and convenient to operate; the separation obtaining success rate of the tomicus piniperda-associated bacteria is high; the many links of bringing the wood blocks infected by the associated bacteria or the phloems with galleries, and the blue-stain tissues back to a laboratory at first, and then separating are effectively simplified, the separation time for the associated bacteria is saved, the separation is accurate, and the separation efficiency is increased.

The invention relates to wood functional improvement methods, in particular to a fast-growing wood flame-retardant reinforced wood veneer which is improved through the processes of wood charring heat treatment and flame-retardant reinforcement treatment, and a method for producing the same, belonging to the technical field of wood functional improving and wood processing. The method for producing the fast-growing wood flame-retardant reinforced wood veneer comprises the following steps of: (1) wood veneer manufacturing; (2) first-time superposing and drying; (3) charring heat treatment; (4) flame-retardant reinforcement treatment; and (5) second-time superposing and drying. The advantages of the charring heat treatment and the flame-retardant reinforcement treatment are gathered, and the defects of the charring heat treatment and the flame-retardant reinforcement treatment are overcome, so that the fast-growing wood flame-retardant reinforced wood veneer which is obtained through processing has the advantages of high dimensional stability, strong corrosion resistance and weather resistance, even penetration for flame retardant, good flame-retardant effect, high surface hardness, full color and luster for appearance of grains, simple production equipment and high out-turn percentage; and meanwhile, the defects that the traditional wood veneer is easy to be subjected to tile deformation and cracking, and the fast-growing wood veneer is easy to be subjected to mildewing, blue stain and rotting are overcome.

The invention belongs to the technical field of medicine and relates to an albumin-bound near-infrared fluorescent dye-maleimide conjugate. The albumin-bound near-infrared fluorescent dye-maleimide conjugate specifically replaces chlorine in the conjugated chain of the cyanine dye with a group containing maleimide, and the optical properties are modified by intramolecular charge transfer effects to enable the conjugate to be used as a blue bio-dye. Secondly, the maleimide group in the conjugate can be covalently bound to a free sulfhydryl group at position 34 of cysteine on plasma albumin by aMichael addition reaction, so that the conjugate has excellent lymph node targeting. A near-infrared fluorescent biological imaging agent overcomes the defects of an imaging method used in clinical sentinel lymph node navigation surgery, and is safe, reliable, accurate in positioning, and high in imaging efficiency. The two imaging modes, blue-stained macroscopic recognition and near-infrared fluorescence imaging, are integrated to enable dual imaging function of lymph nodes in vivo.

The invention discloses a manufacturing method for novel recombinant wood. The process steps are as follows, 1), rubber wood, cotton wood, cedar wood, ailanthus altissima and other small-diameter-grade logs easy to blue stain, brush wood, a rotary-cutting veneer processing residue and the like are used as raw materials, and undergo rolling and defibering to form wood bunches which is loose in thetransverse direction and do not crack in longitudinal direction to serve as constituent units; 2), the 0.1mol/L of the NaoH and the sodium pyrophosphate mixed solution which is diluted to reach the PHvalue of 9.0-11.0 through the deionized water is used for quenching and tempering the wood bunches; and 3), the quenched and tempered wood bunches undergo drying, glue dipping, hot pressing and otherprocesses to prepare the recombinant wood. The method has the advantages of being high in raw material utilization rate, good in impregnating effect and the like, the prepared recombinant wood has excellent mechanical properties and better dimensional stability; and in addition, the method further has the advantages of being high in production efficiency and low in energy consumption.

Fire retardant composition for treatment of various wood products, method of producing the same and uses thereof. The compositions comprise an aqueous solution of bisphosphonate selected from 1-hydroxyethane 1,1-diphosphonic acid, an alkanol amine, and optionally an alkaline agent, the composition having a pH in the range of 4.0 to 7.0. The composition can be produced by mixing together 30 to 50 parts by weight of 1-hydroxyethane 1,1-diphosphonic acid; 1 to 10 parts by weight of an alkanol amine or mixture thereof, said alkanol amine being added in free form; and optionally 0.1 to 40 part by weight of an alkaline agent; and water. The compositions can be used for protecting wood not only against fire but also against mould, rot, blue stain, insect such as termite attacks on wood, dimensional changes, or a combination thereof due to environmental influence.

The invention discloses an autoclaving rapid forming production method of a solid wood arc component. The method is characterized by comprising the following steps: cutting the external dimension of apanel into component dimension in a softening technology, ensuring that the reserved tolerance between the panel dimension and the component dimension is as follows: the length is 2cm, the width is 0.2cm, and the thickness is 0.1cm, putting the cut panel into a stainless steel water tank, leading saturated steam into the water tank to perform boiling, treating the panel for 15 to 40 minutes withthe saturated steam at 100 DEG C, adding an HB-60 softener into a water solution, and ensuring that the solid-containing content of the softener is 60, the PH value is 4 to 5, and the dilute concentration is 5 to 8 percent; adding 0.1 percent of oxalic acid into the water solution to prevent the phenomenon of wood blue stain during boiling. The method has the beneficial effects that the utilization rate of raw materials is high, compared with a sawing method, the utilization rate of raw materials is improved by 40 percent, the rejection rate is reduced by 15 percent, the labor efficiency is improved by 90 percent, the component strength is high, and the appearance is artistic; the boiling time is greatly shortened, the efficacy is improved, and energy is saved; the phenomenon of wood bluestain is avoided.

The invention belongs to the field of gene engineering and relates to a pre-T vector and a T vector composed of the pre-T vector and application thereof. The improved promoter is a recognition site for mutation from a nucleotide sequence from -35 region to -10 region in a promoter region into endonuclease. By the T vector, the problem that the product of transcription or translation of exogenous genes by a strong promoter during blue-white selection of a vector might be toxic to host and cloning will fail can be overcome, blue-white selection of a vector might be toxic to host as a strong promoter starts transcription or translation; the defect that delection of 1-2 bp at enzyme digestion site leads to lacZalpha gene frameshift mutation and false positive clones are generated can be avoided; and the false negative phenomenon that a plate is full of blue stains because exogenous DNA fragment is small and insertion of exogenous DNA does not change a reading frame of lacZalpha gene can beeliminated.

The invention discloses a multifunctional targeted ultrasound contrast agent. The contrast agent comprises carboxyl-terminated polylactic acid, wherein the carboxyl-terminated polylactic acid is filled with fluorocarbon gas to form carboxyl-terminated polylactic acid microspheres, the carboxyl-terminated polylactic acid loads Sudan black dye, and the carboxyl terminal of the carboxyl-terminated polylactic acid is coupled with an anti-human VEGFR-3 monoclonal antibody through a covalent bond. The contrast agent can more accurately and effectively perform positioning and be firmly combined on the surface of lymphatic endothelial cells, not only has strong target searching capability, but also has ultrasonic contrast imaging and intraoperative indication function, also has the function of preventing tumor metastasis, and is a multifunctional ultrasonic contrast agent with both blue staining trace effect and ultrasonic imaging effect and treatment. The invention also discloses a preparation method of the contrast agent, and the method utilizes a double emulsification method to prepare the ultrasonic contrast agent with the blue staining indication function, and uses EDC/ NHS as a coupling activator, and covalently connects VEGFR-3 on the surface of the ultrasonic contrast agent. The method is simple and easy to operate, and is suitable for large-scale production.

The invention relates to thienylazo dye, a clothes washing and caring composition with the same, and methods for manufacturing and applying the thienylazo dye and the clothes washing and caring composition. The thienylazo dye is used as a color matching agent. The thienylazo dye comprises formally electric portions and generally comprises at least two components including at least one chromophore component and at least one polymer component. The suitable chromophore component can generally emit blue, red, violet or purple fluorescence or absorb light so as to reflect blue, red, violet or purple hues when exposed in ultraviolet light. The thienylazo dye, the clothes washing and caring composition and the methods have the advantages that the thienylazo dye is favorable for realizing color matching effects such as whitening effects for fabrics, and can be prevented from being accumulated along with time, and inadvisable blue stain of the processed fabrics can be prevented; the thienylazo dye is generally stable for bleaching agents for the clothes washing and caring composition.

The invention relates to an immunohistochemical staining kit containing pigment tissues and a staining method, belonging to the technical field of immunostaining. In the staining kit, a peroxidase block can block endogenous peroxidase of tissues, so as to prevent the endogenous peroxidase from affecting a staining result; a peroxidase-labeled secondary antibody polymer is based on a HRP enzyme labeling system and has high sensitivity; a blue stained substrate based on a peroxidase system and a blue stained buffer solution matching the blue stained substrate make up the blue stained color developing solution, under catalysis of the HRP enzyme, the blue stained color developing solution forms blue granular precipitates that can be observed under a microscope. The positive part of the tissuecan be positioned accurately, the signal is clear, the blue granular precipitates are in sharp contrast to color substances (melanin or carbon particles), and the immunohistochemical result is clear and distinctive. The enzyme labeling system in the invention has high sensitivity, high specificity, and has a clear staining background.

The invention discloses a color protecting method for inhibiting blue stain of a white turnip. The color protecting method comprises the following steps that UVC is adopted to irradiate the white turnip, and then oxygen-containing gas is adopted to conduct gas flush packaging treatment on the white turnip; after gas flush packaging treatment, the oxygen-containing gas is released, and then storageis conducted; and the oxygen-containing gas is mixed gas of oxygen and nitrogen. The white turnip is synergistically treated through UVC irradiation and oxygen, then storage is conducted under the normal condition, thus the blue stain phenomenon of the white turnip can be effectively controlled, for example, the white turnip is stored under the normal temperature condition (the temperature is 23-28 DEG C, and the relative humidity is 30-40%) for 5 days, then the treated white turnip is longitudinally cut for observation of color change, and it is found that blue stain does not occur.

The invention relates to a printing and dyeing method for controlling reactive brilliant blue staining dyeing-defect phenomena. The method includes the following steps that step one, a fabric is taken and undergoes pretreatment; step two, the temperature in a constant-temperature dye vat is adjusted to be 30-38 DEG C and then alkali is added; reactive brilliant blue is added after 10-15 minutes; heating is performed to reach the temperature of 60-70 DEG C, and the fabric is put into the dye vat to undergo dip dyeing for 20-30 minutes; then, heating is performed to reach the temperature of 80-90 DEG C, and dip dyeing is performed for 20-30 minutes; cooling is performed to reach the temperature of 75-85 DEG C, and heat preservation is performed for 10-20 minutes; step three, the dip-dyed fabric is taken out to undergo washing, color fixation and drying. By the adoption of the printing and dyeing method, the sensitivity of the reactive brilliant blue to the dyeing conditions can be effectively reduced, the dyeing-defect problems easily produced by using the reactive brilliant blue can be effective solved, the dyeing effect of the reactive brilliant blue and the production efficiency are greatly improved, and the printing and dyeing method has very good practical production and application value.

The invention discloses a maple wood board degreasing method. The maple wood board degreasing method comprises the following steps that A, the maple wood board surface is sprayed utilizing a pentachlorophenol sodium solution with the concentration being 1-3% and placed for 0.5-1 h to obtain a product A; B, the product A surface is sprayed utilizing a sodium sulfite solution with the concentrationbeing 2-5% and placed for 0.5-1 h to obtain a product B; C, the product A is subjected to suffocating in steam with the temperature being 180-220 DEG C, the suffocating time is 1-2 h, and a product Cis obtained; D, the product C is placed into a container to be subjected to stewing utilizing an alcoholic solution with the concentration being 50-60%, the stewing time is 4-6 h, and a product D is obtained; E, the product D is dried with the temperature being 120-150 DEG C till the water containing rate of a maple wood board is 12-16%, and the maple wood board is cooled to 20-30 DEG C to obtaina finished product. The maple wood board degreasing method has the characteristics that no blue stain is generated, and the degreasing efficiency is high.